Name______________________________________ Date____________________ Pd_____
TEST 2: Study Guide
Scientific Method
1. Draw the diagram of the scientific method.
2. What should you do after “state the problem”?
3. What should you do if your hypothesis is supported?
4. What should you do if your hypothesis is not supported?
5. What is the difference between a dependent and an independent variable?
6. Students of different ages were given the same jigsaw puzzle to put together. They were
timed to see how long it took to finish the puzzle.
a. Independent variable:
b. Dependent variable:
c. Control:
Metric System
7. _________________ is the measurement of how much an object weighs.
8. _________________ is the measurements of how much space an object takes up.
9. _________________ is the measurement of the ratio between how much an object weights
and how much space it takes up.
10. The base unit for mass is_______________
11. The base unit for volume is________________
12. The base unit for length is________________
13.
Prefix
Unit
abbreviation
Exponential
factor
Meaning
Example
mega
103
100
da
xxxxxxxxxx
xxxxxxxxxx
100
d
1
Meter(m), liter(L), gram(g)
.1
Centimeter(cm)
m
micro
.000001
Converting Units
14) 20 mL = ________________ kL
15) 44.38µL = ______________dL
16) 0.0938 L = _______________kL
17) 2.4 µm =________________mm
18) 66mg = __________________dam
19) 77.83 g =__________________dg
20) 0.0394 Mg = ________________µg
21) 3 cm =____________________km
Measuring Correctly
22.
_____________
23.
_______
25.
__________
26.
24.
______
___________
Density
27. A rock is placed on a triple beam balance and its mass is found to be 34.8g, it is then placed
in a grad cylinder containing 60.0mL of water. After placing the rock in the grad cylinder
the water level was measured to be 74.0mL, what is the density of the rock?
28. A rectangular object’s side are measured to be 2.5cm, 4.0cm and 3.2cm. Its mass is
measured to 31.7g. What is the density of the object? Would it float or sink in water?
29. What is the mass of an object that has a volume of 7.2mL and a density of 0.88 g/mL?
Sig Figs
30) 4.0____
31) 0.032_____
32) 550______
33) 0.89300_____
34) 203 ____
35) 2.3001____
36) 2000_____
37) 4500______
38) 2300_____________
41)2.8 x 102____________
39) 0.0045 _____________
42) 3.087 x 10-1____________
40) 889___________
43) 9.1 x 10-3_________
44) 75.43 ___________ 3 sig figs
45) 21.3986___________ 3 sig figs
46) 23.889 _____________ 4 sig figs
47) 23945______________ 2 sig figs
48) 23.08 + 3.1 = ______________________
49) 76 + 23.843 = ______________________
50) 0.0030 ÷ 843 = ___________________
51) 1.3834 x 500 = ______________________