Assignments

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12	13	14	15 If you do not understand a direction or part of a lab procedure, you should 3:05 PM Pre Test chemistry 2021 10:55 AM	16 The branch of science that studies what "Stuff" is made of and how it interacts with other "Stuff". 3:05 PM What are the common steps of scientific methods? 10:55 AM	17 Lab Safety contract sign form 11:59 PM quiz for lab safty 11:59 PM A series of steps used by scientists to solve a problem or answer a question 11:59 PM	18
19	20 Scientific method 11:59 PM . Should experiments be repeated over and over to see if the results are the same each time? 3:05 PM	21 Research on solubility as a factor that affects the digestion of foods in humans would be an example of ______________. 3:05 PM What are the SI base units for time, length, mass, and temperature? 11 AM	22 We use the BASE UNIT of ______________ to measure liquid volume 3:05 PM 1.Determine the number of mm in 1600 m. 2. Determine the number of mm in 14.3 cm. 11:59 PM	23 7,000 g = ____ kg 3:05 PM	24 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. 11:59 PM Is 20 g greater than, less than, or equal to 2 kg? 3:05 PM . Express each of the following in scientific notation 1. 78,000 2. 16 3. 0.00053 11:59 PM Express each of the following in scientific notation. 1. 78,000 4. 16 2. 0.00053 5. 0.0043 3. 250 11:59 PM	25
26	27 : 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 11:59 PM quiz 1 10:55 PM	28 Convert this number into scientific notation: 0.068 3:05 PM	29 . The rule of scientific notation is to write all exponents with a base of ____. 3:05 PM 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 11:59 PM	30 scientific notation 11:59 PM How many significant figures are in each measurement? A) 22 metersticks B) 0.070 80 m C) 98,000 m 3:05 PM	1 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? 11:59 PM A measure of how hot or cold something is; specifically a measure of the average kinetic energy of the particles in an object. 11:59 PM	2