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I. souring of milk<br />
II. melting of silver<br />
III. digestion of food<br />
IV. burning of coal<br />
V. condensation of steam<br />
a. II and V<br />
b. I, III, and IV<br />
c. I, II, and III<br />
d. IV and V<br />
e. III, IV, and V<br />
____ 6. Which response lists all the physical changes but no chemical changes?<br />
I. evaporation of water<br />
II. fermentation of sugar<br />
III. dissolving sugar in water<br />
IV. melting of gold<br />
V. changing of color of leaves<br />
a. I, II, and III<br />
b. I, III, and IV<br />
c. III, IV, and V<br />
d. I and IV<br />
e. II and V<br />
____ 7. Which of the following is not a mixture?<br />
a. air<br />
b. steel<br />
c. seawater<br />
d. gasoline<br />
e. oxygen<br />
____ 8. Crude oil can be separated into gasoline, diesel, heating oil, etc. by differences in boiling points. The form of<br />
matter which would best describe crude oil is:<br />
a. homogeneous mixture<br />
b. heterogeneous mixture<br />
c. compound<br />
d. mineral<br />
e. element<br />
____ 9. Which response includes all the compounds listed below and only the compounds?<br />
I. ethyl alcohol<br />
II. air<br />
III. mercury<br />
IV. steam<br />
V. calcium fluoride<br />
a. I, II, and IV<br />
b. III and V<br />
c. II, IV, and V
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