Practice Quiz #1

Properties of Matter

Are the following properties of chlorine physical or chemical?

a. is a yellowish — green gas (physical)
b. can be used to disinfect polluted water (chemical)
c. has a sharp, suffocating odour (physical)
d. its boiling point is —34.5°C (physical)
e. combines with sodium to form salt (chemical)

Which of the following are physical changes and which are chemical changes?

a. rusting of iron (chemical)
b. combustion of gasoline (chemical)
c. boiling of water do pumping of crude oil (physical)
e. distilling alcohol (physical)
f. digesting of food (chemical)
g. boiling an egg (physical)
h. bending of glass (physical)

Identify the following as either a homogeneous mixture, a heterogeneous
mixture, a compound or an element.

a. baking soda (compound)
b. water and antifreeze (homogeneous mixture)
c. gold (element)
d. river water (homogeneous mixture)
e. Dairy Queen Blizzard (heterogeneous mixture)
f. crude oil in the ground (homogeneous mixture)
g. contents of a hot air balloon (homogeneous mixture)

For the following statements, give the term that best mathes the statement or process

a. New substances that are formed in a chemical reaction (chemical change)

b. Has no definite volume nor shape (gas)

c. Two or more phases are present in the mixture (heterogeneous mixture)

d. Composed of atoms and cannot be decomposed into simpler
substances by chemical means (element)

e. Can neither be created nor destroyed, but changed from one form to
another (matter)

f. Contains on one kind of atom (element)

5. Fill in the terms for the phase transitions of matter:

solid --------> liquid --------> gas

solid (melting or fusion)----> liquid (vaporization or evaporation)------> gas