1.10 – Unit 1 Review
I. Lab Safety and Equipment
1. List 3 pieces of lab safety equipment and the uses for each.
2. Name 3 pieces of lab equipment and the uses for each.
3. How can you test for odors in a lab?
4. Name 2 places you can put used chemicals.
5. What should you do the night before a lab?
6. How do you measure volume and what piece of equipment is used?
7. If you measure an object to be 100 grams, you measure the object’s ________________.
II. Scientific Measurement
8. Identify how many significant figures are in the following numbers:
a) 1,756.04
b) 0.098
c) 3,400
d) .003
e) 3,400.
9. Three students measured the volume of a tennis ball 5 times each. The accepted value is: 75 mL
Trial
Trial
Trial
Trial
Trial
1
2
3
4
5
Student 1
71
81
68
73
64
Student 2
70
71
64
76
81
Student 3
72
72
73
74
71
a) which student was most accurate?
b) which student was most precise?
c) what is the % error for student 2, trial 5?
10. The drive from your house to the mall is 17.8 km long. How many yards will you have to drive to
get to the mall? (3 ft = 1 yard, 1.6 km = 1 mile, 1 mile = 5280 ft)
11. You are looking to buy some gravel to surround your brand new koi pond in your back yard. A bag
costs $4.99 per pound, and it weighs 12.00 kg. If 1.0 kg is equivalent to 2.2 lb, how much would you
pay for 15 bags of gravel?
12. You are about to take a cross country trip from Seattle, WA to Miami, FL. You look up the
distance and you find out that it is 3,309 miles. If one mile is equivalent to 5,280 ft, and you
calibrate that it takes you 1 and a half steps per foot you travel, how many steps would it take you
to get from Seattle to Miami?
13. Convert 1,200 km = _____________________ m (10-3 km = 1 m)
14. Convert .430 megagrams = ___________________ grams (10-6 Mg = 1 g)