FORENSIC SCIENCE
Name: _________________________________
Period:____ Date:_______
_
1. The basic metric unit of volume is the:
a. Ounce
b. Meter
c. Liter
d. Cubic centimeter
e. Milliliter
_ _ 2. One inch is equivalent to how many centimeters?
a. 100
b. 10 c. 0.01 d. 453.6
e. 2.54
__ 3. Water boils at:
a. 0° Celsius
b. 25° Celsius c. 50° Celsius d. 100° Celsius
e. 212° Celsius
_ 4. Which of the following is an element?
a. Wood b. Water
c. Aluminum d. Air e. Fire
_ 5. The physical state that has both shape and volume is a:
a. Solid
b. Liquid
c. Gas d. Vapor
e. All of the above
_ _ 6. Which of the following is FALSE?
a. The basic building blocks of all substances are elements.
b. Elements are composed of atoms.
c. Two or more elements combine to form compounds.
d. Compounds are composed of molecules.
e. At present, 96 compounds have been identified.
_ 7. Which of the following is NOT a physical property of a substance?
a. Boiling point b. Color
c. Melting point
d. Weight
e. Color change in the presence of another chemical substance
_ 8. Which of the following has higher frequencies and higher energy values in the
electromagnetic spectrum?
a. Visible light
b. Radio waves
c. Ultraviolet radiation
d. Infrared radiation
e. X-rays
_ 9. Density is defined as:
a. Volume per unit weight b. Weight per unit volume c. Volume per unit
volume
d. Weight per unit weight
e. None of the above
_ 10. A piece of glass is immersed in a liquid. It proceeds to float on the liquid’s
surface. This shows that the density of the glass is ___________ the density of
the liquid.
a. More than
b. Less than c. Equal to
d. None of the above
11. a.) Convert 16.7 inches to feet ____________ b.) convert to cm (2.54 cm per
inch)____________
12. Convert 84 miles to kilometers (there are 0.6 miles in a kilometer) __________
13. Convert 40º C to Fº ____________________
14. Convert 110º F to Cº __________________
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Use the table below to answer the following questions (NR is No Reaction)
Substance
Baking
powder
Soduim
Hydroxide
Cocaine
Creatine
Potassium
Iodide (KI)
Yellowbrown
Brown
Litmmus
Acetic Acid
Blue
Blue
Bubbles
and foams
NR
Brown
Yellowbrown
Red
Pink
NR
NR
Cobalt
Thiocynate
NR
Ninhydrin
NR
NR
Blue
NR
NR
Purple
NR
15. An unknown substance reacts with Ninhydrin and turns purple, what substance is it?
16. An unknown substance turns brown and added to KI, turn red when tested with
Litmus paper, and has no reaction when added to Ninhydrin, what is the substance?
17. An unknown substance bubbles and foams when added to Acetic acid and turns blue
when added to Cobalt Thiocynate, what is the substance?
18. The mass of a piece of glass is 40 grams, the displaced volume of the glass is 25 cm³
what is the density of the piece of glass?
19. What is the difference between chemical and physical properties—provide examples
20. Describe how you could you determine the density of a small chard of glass, less that
5 grams, is a lab?
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