Assignments

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12	13	14 If you do not understand a direction or part of a lab procedure, you should 3:05 PM	15 Pre test chemistry 2021 3:05 PM	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? 11:59 PM	17 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 Lab Safety contract sign form 11:59 PM	18
19	20 . Should experiments be repeated over and over to see if the results are the same each time? 3:05 PM scientific method 11:59 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? 11:59 PM	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 m in 1600 mm. 3. Determine the number of mm in 14.3 cm. 4. How many seconds are in 4.3 years? 3:05 PM	23 7,000 g = ____ kg 3:05 PM 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. 4 PM	24 Express each of the following in scientific notation. 78,000 5. 16 2. 0.00053 6. 0.0043 3. 250 7. 0.875 11:59 PM Is 20 g greater than, less than, or equal to 2 kg? 3:05 PM	25
26	27 conversion factor 11:59 PM 1.(6.02 x 10 ^23) (8.65 x 10^4) 2. (6.02 x 10 ^23) (9.63 x 10 ^2) 3. 5.6 x 10^–18/ 4. (6.02 x 10 ^23) (–5.11 x 10 ^–27) 8.9 x 10^8 11:59 PM quiz 1 3:05 PM	28 Convert this number into scientific notation: 0.068 3:05 PM	29 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 . The rule of scientific notation is to write all exponents with a base of ____. 3:05 PM	30 How many significant figures are in each measurement? A) 22 metersticks B) 0.070 80 m C) 98,000 m 3:05 PM scientific notation 11:59 PM	1 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