Chemistry - JIGMEY - 3-3 Assignments
- Instructors
- Term
- 2021-2022 School Year
- Description
-
Upcoming Assignments
No upcoming assignments.
Past Assignments
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ice cream lab
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The pressure of the oxygen gas inside a canister with a fixed volume is 5.0atm at 15oC. What is the pressure of the oxygen gas inside the canister if the temperature changes to 263K? Assume the amount of gas remains constant. show the math P1/ T1 = p2/T2
show the math
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Charles law problem
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1 A gas at 127 celsius and 10.0 L expands to 20.0 L. What is the new temperature in Kelvin? (You must convert to Kelvin before calculating this problem) 2 A gas at 0.000 celsius and 10.0 L expands to 20.0 L. What is the new temperature in celsius. (First, ya’ gotta convert initial temperature to Kelvin, then do the calculation. Finally, you have to convert your answer, in Kelvin, to celsius!) 3 A gas at 200 celsius and 10.0 L expands to 20.0 L. What is the new temperature in celsius.
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Final SGO assessment test
Make sure to write your name and period number
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boyles law problem
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gas law ( classwork)
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How do gas molecules move? answer choices
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What does Boyle's law relate to? answer choices
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Mole lab activity
please the lab activity and upload here
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. How many atoms are present in a 13.5 gram sample of beryllium? answer choices
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What is the mass of 1.2 x 1024 atoms of C? answer choices
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How many atoms are present in a 0.0254 mole sample of gold? answer choices
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Moles and Molar Mass Worksheet
Determine
the number of moles in each of the following:
6.
23.5 grams of Co
7.
216 grams of Ag
8.
.0759 g of W
9.
467.1 kg of K
Determine
the mass of each of the following:
14.
35.1 mol of K
15.
1.04 mol of Cu
16.
.0250 mol of Au
17.
1.90 X 10-2 Mol Of U
the number of moles in each of the following:
6.
23.5 grams of Co
7.
216 grams of Ag
8.
.0759 g of W
9.
467.1 kg of K
Determine
the mass of each of the following:
14.
35.1 mol of K
15.
1.04 mol of Cu
16.
.0250 mol of Au
17.
1.90 X 10-2 Mol Of U
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What is the molar mass of H2O? answer choices
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mole questions
Mole-Mass Conversions
How
many moles in 28 grams of CO2 ?
What
is the mass of 5 moles of Fe2O3 ?
Find
the number of moles of argon in 452 g of argon.
Find
the grams in 1.26 x 10-4 mol
of Copper
Find
the mass in 2.6 mol of lithium bromide.
How
many moles in 28 grams of CO2 ?
What
is the mass of 5 moles of Fe2O3 ?
Find
the number of moles of argon in 452 g of argon.
Find
the grams in 1.26 x 10-4 mol
of Copper
Find
the mass in 2.6 mol of lithium bromide.
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Which of the following statements regarding the mole is INCORRECT? answer choices
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How many atoms of iodine are in a mole of iodine? answer choices
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Determine the molar mass of the following compounds. 1. KF 2. NaOH 3. Ca3N2 4. MgSO4 5. Ca(OH)2 Determine the number of moles in each of the following: 6. 4.53 x 1023 atoms of Na 7. 7.899 x 1023 atoms of Cu 8. 1.42 x 1024 atoms of Ti (Titanium) 9. 5.08 x 1022 atoms of Fe
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Determine the molar mass of each of the following. 1. Na 2. Cu 3. Si 4. Cl 5. Pb Determine the number of atoms in each of the following: 18. 2.35 mol of Rb 19. 1.79 mol of S 20. .0500 mol of Ar 21. 105 mol of Br
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What is Avogadro's Number? answer choices
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The Mole
To answer the questions please refer your textbook page from 320 to 324
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Avogadro's number of representative particles is equal to one_____. answer choices
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CHEMISTRY: COUNTING ATOMS IN COMPOUNDS WORKSHEET
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The mass of one mole of an element is equal to
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Vocabulary – Stoichiometry
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Which chemical reaction always starts with a hydrocarbon that reacts with oxygen and produces carbon dioxide and water? answer choices
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Types of Chemical Reactions POGIL
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What is a double replacement? answer choices Two compounds react to form two new compounds. One compound reacts to form two separate elements. Two elements reacting to form a single compound. A hydrocarbon and
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A decomposition reaction can be recognized because it has... answer choices
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Which of the following is the general formula of a synthesis reaction? answer choices
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How many HCl molecules do you need to balance this equation? Mg + __HCl ---> MgCl2 + H2 answer choices
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balancing chemical equation
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chapter test
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Balance this equation: H2 + Cl2 ---> HCl answer choices
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What is the number before a chemical formula called? Example: 2H2 + O2 ---> 2H2O answer choices
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a substance that is formed as the result of a chemical reaction answer choices
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classwork balancing equation
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https://www.innerorbit.com/schools/students/?qid=14865
It is considered as test grade
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Law of conservation of matter
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What does the Law of Conservation of Mass state? answer choices
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basics of chemical reaction
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Provides evidence that a chemical reaction has occurred.
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chemical reaction
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basic chemical reaction
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Calculate percentage composition of each of the following compounds. Show your work and always include units. 4. CaSO4 mass % of Ca 5. (NH4) 2SO4 mass % of N and H 6. Zn3(PO4) 2 mass % of Zn and P 7. Mg(NO3) 2 mass % of Mg 8. KCl mass % of K 9. Li Cl Mass % of Li
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Calculate the percentage composition of each of the following compounds. Show your work and always include units. 1. Ca3P2 mass % of Ca 2. Ca(OH) 2 mass % of H 3. Na2SO4 Mass % of S
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What is the molar mass of table salt (NaCl)? answer choices
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What is the molar mass of sodium (Na)? answer choices
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Calculate the molar masses of each of the following compounds. Show your work and always include units. 4. CaSO4 5. (NH4) 2SO4 6. Zn3(PO4) 2 7. Mg(NO3) 2 8. KCl
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How many atoms are there TOTAL in: H2SO4
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Calculate the molar masses of each of the following compounds. Show your work and always include units. 1. Ca3P2 2. Ca(OH) 2 3. Na2SO4
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Bonding project
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polyatomic ion
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Which is the correct formula for: three hydrogen (H) one sulfur (S) four oxygen (O)
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How many atoms are there in the compound MgCO3?
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binary comp 2
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The formula of copper(II) oxide is
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binary compound
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What is the chemical formula of Sodium chloride?
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. What is the chemical formula of Magnesium chloride?
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https://www.youtube.com/watch?v=URc75hoKGLY
Please write three comments on veido and write chemical formula for these compound.
1.
Na1+ F1– 1. ______________________
2.
K1+ S2– 2. ______________________
3. Al3+ O2–
1.
Na1+ F1– 1. ______________________
2.
K1+ S2– 2. ______________________
3. Al3+ O2–
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Unit test
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online flame test lab
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light worksheet
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Put the visible light colors in order from longest wavelength to shortest wavelength
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Calculate the wavelength of the yellow light emitted by the street light, if the frequency of the radiation is 5.10x1014Hz.
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The frequency of violet light is 7.5x1014 Hz. What is its wavelength?
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Red light has a wavelength of 675 x 10-9 m. What is its frequency?
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light travels
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A wave has a frequency of 22 Hz and a wavelength of 4.0 m. What is its velocity? 2. What is the frequency of a wave if its wavelength is 3.6 x 10–9 m and its velocity is 3.0 x 108 m/s?
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Electron configuration worksheet
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What atom matches this electron configuration? 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 10
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The electron configuration of an atom is 1s 2 2s 2 2p 6. The number of electrons in the atom is
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What electron configuration matches an oxygen atom?
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constructuve response midterm
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. What electron configuration matches an oxygen atom? answer choices
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What is the electron configuration of sodium?
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Which element has similar chemical properties as sodium but has 7 energy levels?
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What group number are the halogens found?
do now
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Periodic table puzzle ( classwork)
Classwork , please try to complete on time
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periodic table assignment
please refer the ppt and internet to answer the package.
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What are the elements in group 1 (the far left) of the periodic table called?
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Each column in the periodic table is called a
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In 1869, Dmitri Mendeleev developed the first periodic table, organizing the elements according to atomic weight. When he ordered the elements, he noticed that there were patterns of repeating properties. The modern periodic table sequences elements from left to right by atomic number. This was the first person to organize a periodic table.
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The periodic table is a chart that organizes the elements based on their atomic properties. Elements in the periodic table are organized according to the periodic law. The periodic law states that chemical and physical properties of elements are periodic functions of their atomic numbers (the number of protons in the nucleus). As the atomic number of elements increases, different elements display similar characteristics at regular intervals. Periodic law states that elements are arranged _______________________________________________________________.
Answer yours do now by doing through the PowerPoint of on periodic table and video link posted under the material section of googleclassroom.
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Isotopes lab
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unit test
Unit test
Please make sure write your name on it .
Please make sure write your name on it .
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What quantities vary between isotopes of an element?
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An element with 4.35% have a mass of 49.9461 amu, 83.79% have amass of 51.9405 amu, 9.50% have a mass of 52.9407 amu, and 2.36% have a mass of 53.9389amu
do now
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1. Calculate the average atomic mass of magnesium using the following data for three magnesium isotopes. Isotope mass (u) relative abundance Mg-24 23.985 78.70% Mg-25 24.986 10.13% Mg-26 25.983 11.17% 2. Calculate the average atomic mass of iridium using the following data for two iridium isotopes. Isotope mass (u) relative abundance Ir-191 191.0 37.58% Ir-193 193.0 62.42%
class work
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24.1% of all the isotopes of a an element have a mass of 75.23 amu, 48.7% have a mass of 74.61 amu, and 27.2% have a mass of 75.20 amu. What is the average mass of this element?
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Magnesium exists as the three isotopes shown. What is the average atomic mass of magnesium?
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1. What is the atomic mass of hafnium if, out of every 100 atoms, 5 have a mass of 176, 19 have a mass of 177, 27 have a mass of 178, 14 have a mass of 179, and 35 have a mass of 180.0? 2. Iodine is 80% 127 I, 17% 126 I, and 3% 128 I. Calculate the average atomic mass of iodine. 3. Calculate the average atomic mass of gold with the 50% being gold-197 and 50% being gold-198. 4. Calculate the average atomic mass of lithium, which occurs as two isotopes that have the following atomic masses and abundances in nature: 6.017 u, 7.30% and 7.018 u, 92.70%.
clas work
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isotopes doc
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12 protons and 13 neutrons
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What do these isotopes of carbon all have in common?
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An atom that is an isotope of potassium (K) must...
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bohr model
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In borhs model, Orbitals are also known as
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What is the atomic number of this atom?
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Bohr model project
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What is a Bohr Model?
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What element is represented in this Bohr Model?
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What is the name of this element?
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Rutherford Gold foil experiment
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An atom contains three elementary particles: electrons, neutrons, and protons.
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. What did the Plum pudding model suggest about the structure of atoms?
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Thomson model of atom
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Person that discovered electrons using the cathode ray experiment. He created the plum pudding model
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Build an atom Lab simulation
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How many neutrons does the an element with an atomic number of 3 and a mass of 7 contain?
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In order for an atom to be neutral what has to be true?
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The number of protons is equal to
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What is the sum of an atom's protons and neutrons called?
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Protons and neutrons are found in the center of the atom called the:
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element and compound
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1. What was the first particle discovered inside an atom?
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what is mixture ?
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quiz
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mixture separation
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--- is a separation technique that produces highly pure solids.
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Regular Chemistry Chapter 1 Quiz
Click on the link below to start the game
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Which of these is not a homogeneous mixture?
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1. The density of silver (Ag) is 10.5 g/cm3. Find the mass of Ag that occupies 965 cm3 of space. 2. A 2.75 kg sample of a substance occupies a volume of 250.0 cm3. Find its density in g/cm3. 3. Under certain conditions, oxygen gas (O2) has a density of 0.00134 g/mL. Find the volume occupied by 250.0 g of O2 under the same conditions. 4. Find the volume that 35.2 g of carbon tetrachloride (CCl4) will occupy if it has a density of 1.60 g/mL.
D= M/ V please apply the formula to calculate the problem
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density lab
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1. Convert 55 miles per hour to kilometers per hour. How many kilometers/second is 55 miles per hour? (1 mile 1.6 km) 2 . Convert the following data to scientific notation. a. 166,000,000,000,00 m2 b. 8847 m c. 484 L
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What is the formula for density?
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temperature conversion
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A temperature scale in which water freezes at 0°C and boils at 100°C.
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Look at the graph below. Then answer the questions. a. What kind of graph is this? b. According to the graph, which element is most abundant in Earth’s crust? c. According to the graph, what percent of Earth’s crust is made up of titanium? Of calcium?
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A measure of how hot or cold something is; specifically a measure of the average kinetic energy of the particles in an object.
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scientific notation
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How many significant figures are in each measurement? A) 22 metersticks B) 0.070 80 m C) 98,000 m
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. The rule of scientific notation is to write all exponents with a base of ____.
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How many significant digits are in each of the following examples? 1) 47.1 2) 9700. 3) 0.005965000 4) 560 5) 0.0509 6) 701.905 7) 50.00 8) 50.012 9) 0.000009 10) 0.0000104
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Convert this number into scientific notation: 0.068
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: Express each of the following in standard form. 1. 5.2 x 10 ^3 3. 3.6 x 10 ^1 2. 9.65 x 10 ^–4 4. 6.452 x 10 ^2
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quiz 1
write your name and complete all the questions
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How many seconds are in 4.3 years? 1. Convert 2875 cm3 to liters. 2. Convert 5.2 cm of magnesium (Mg) ribbon to mm of Mg ribbon 3Convert 0.049 kg sulfur (S) to g of S. 4. Convert 0.020 kg of tin (Sn) to mg of Sn.
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Is 20 g greater than, less than, or equal to 2 kg?
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. Express each of the following in scientific notation 1. 78,000 2. 16 3. 0.00053
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Express each of the following in scientific notation. 1. 78,000 4. 16 2. 0.00053 5. 0.0043 3. 250
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7,000 g = ____ kg
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We use the BASE UNIT of ______________ to measure liquid volume
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1.Determine the number of mm in 1600 m. 2. Determine the number of mm in 14.3 cm.
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Research on solubility as a factor that affects the digestion of foods in humans would be an example of ______________.
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What are the SI base units for time, length, mass, and temperature?
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Scientific method
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. Should experiments be repeated over and over to see if the results are the same each time?
do now
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Lab Safety contract sign form
I ...................of Class have read and agree to follow all of the safety rules in this contract. I will follow my teacher’s directions. I am aware that failure to follow these rules is dangerous and may result in my being barred from the laboratory, and that this may result in a failing grade. Student Signature Date Dear Parent or Guardian: Your signature indicates that you have read these safety rules and have instructed your child to follow these rules and procedures in the science laboratory. Parent/Guardian Signature
f Class have read and agree to follow all of the safety rules in this contract. I will follow my teacher’s directions. I am aware that failure to follow these rules is dangerous and may result in my being barred from the laboratory, and that this may result in a failing grade. Student Signature Date Dear Parent or Guardian: Your signature indicates that you have read these safety rules and have instructed your child to follow these rules and procedures in the science laboratory. Parent/Guardian Signature
f Class have read and agree to follow all of the safety rules in this contract. I will follow my teacher’s directions. I am aware that failure to follow these rules is dangerous and may result in my being barred from the laboratory, and that this may result in a failing grade. Student Signature Date Dear Parent or Guardian: Your signature indicates that you have read these safety rules and have instructed your child to follow these rules and procedures in the science laboratory. Parent/Guardian Signature
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quiz for lab safty
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A series of steps used by scientists to solve a problem or answer a question
do now
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The branch of science that studies what "Stuff" is made of and how it interacts with other "Stuff".
do now
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What are the common steps of scientific methods?
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If you do not understand a direction or part of a lab procedure, you should
Do now
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Pre Test chemistry 2021
Make sure write your name