Chemistry 10
Name__________________________________
Teacher__________________________Pd____
Unit 1 Review: Thinking Like a Chemist
Directions: As you work the following problems, try to identify which learning goal on p. 2 of your packet each question
addresses. Check off learning goals as you go, and be sure to study any learning goals not covered by these questions on
your own!
1. In the space below, sketch a picture of a graduated cylinder, a beaker, and a test tube:
Graduated cylinder
Beaker
Test Tube
2. Which of the above would be the best at precisely measuring a volume of liquid (eg. 15 mL) ? _____________
3. Record the correct measurement (with units!) for the liquid in the object below. Think carefully about how
many decimal places to use!
Answer: ____________________
4. Convert the following numbers into proper scientific notation:
a) 463,000 = _________
e) 108.75 x 104 = _________
b) 56 = ________
f)
.985 x 108 = ____________
c) .0000078 = __________
g) 934.1 x 10-9 = ____________
d) 0.950 = __________
5. Convert the following numbers into ordinary notation:
a)
b)
c)
d)
e)
3.58 x 107 = ___________
4.54 x 102 = ___________
5.47 x 100 = ___________
4.44 x 10-3= ___________
-5.74 x 103 = ___________
6. Find the answers to the following without using a calculator. Show all work and circle your final answer!
a) 5.0 x 104 * 1.0 x 106
e) 4.0 x 107 * 3.0 x 108
b) 6.0 x 107 + 2.0 x 106
f) 6.0 x 10-5 / 3.0 x 102
c) 4.0 x 104 / 2.0 x 102
g) 8.0 x 10-5 + 1.0 x 10-6
d) 8.0 x 103 – 5.0 x 102
h) (8.0 x 106 - 5.0 x 105) / 1.0 x 103
7. a)
During lunch last week, you were served a mysterious substance as your beverage. You take a sample back home
with you, and find out that the mass of the liquid is 458 grams and the volume is 446.8 milliliters. In the space below, calculate
the density of this mysterious object – use the method your teacher taught you in class to calculate the density!
b)
Using Figure 2.8 on p. 36 of your textbook, identify what this mystery substance is (NOTE: it is a clear substance)
8. Find the mass of an object that has a density of 0.92 grams per milliliter and a volume of 55.7 milliliters. Again, use the
method shown in class to do this problem!
9. What is the volume of a liquid that has a mass of 24.2 grams and a density of 1.2 grams per milliliter? Use the method shown
in class to solve this problem.
10. From the lab last week in class, you remember that the density of sand is equal to 1.60 grams per milliliter. If you weigh out
20. grams of sand, what will the volume be?
11. a)
b)
Using the table on p. 36 of your textbook, list the solids that will sink in water.
Which solids listed in the same table will float in ethyl alcohol?
12. Whoa! Jaden can bench 136 kilograms! How many ounces is this equal to (2.2 pounds = 1 kilograms; 16 ounces = 1
pound)? Use conversion factors to solve this problem in the space below.
13. Your friend from Switzerland needs help. She just moved here, and needs to know what 60 miles per hour is equal to in
meters per second (the unit of choice in her country) so that she doesn’t speed on the beltline. Using conversion factors
found on p. 16 of your packet, convert 60 miles per hour into meters per second in the space below.