Assignments

Sunday	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday
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
3	4 temperature conversion 11:59 PM A temperature scale in which water freezes at 0°C and boils at 100°C. 11:59 PM	5	6	7	8 What is the formula for density? 11:59 PM	9
10	11	12	13	14	15 density lab 11:59 PM 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 11:59 PM	16
17	18	19	20	21 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. 11:59 PM	22	23
24	25 Which of these is not a homogeneous mixture? 3:05 PM	26	27 Regular Chemistry Chapter 1 Quiz 12:02 PM	28 --- is a separation technique that produces highly pure solids. 11 AM	29	30
31	1	2	3	4	5 mixture separation 11:59 PM	6