1. Classify each of the following properties as chemical or physical:
color
chemicalphysical
stability
chemicalphysical
resistance to corrosion
chemicalphysical
Classify the underlined property as chemical or physical:
2. Plants use carbon dioxide from the air to produce oxygen.
Iodine is a purple solid that melts at 114 oC.
chemicalphysical
chemicalphysical
The white solid calcium carbonate gives off carbon dioxide gas when exposed to acid.
chemicalphysical
chemical
Plants use carbon dioxide from the air to produce
oxygen.
chemical
physical
Iodine is a purple solid that melts at 114 oC.
physical
The white solid calcium carbonate gives off carbon
dioxide gas when exposed to acid.
chemical
chemical
3
3. Classify each of the following changes as chemical or physical:
grilling a steak
souring of milk
adding antifreeze to a car radiatior
4. State whether the kinetic energy of the underlined object increases or decreases
as a result of the change described.
an archer shoots an arrow
increases
increases
a golf ball lands on a green
decreases
decreases
a bullet is shot from a pistol
increases
increases
5. State whether the potential energy of the underlined object increases or
decreases as a result of the change described.
a positive ion and a negative ion are
separated
a cat climbs a tree
a skier skis from the top to the bottom of a
hill
3
3
6.
3
Which the following best describe the matter in the picture
increases
increases
increases
increases
decreases
decreases
Pure substance
Heterogeneous mixture
Homogenous mixture
7. Classify each of the following as either a pure substance or a mixture:
apple juice
ethyl alcohol
tooth paste
8. Classify each of the following mixtures as either homogeneous or heterogeneous:
gasoline
chocolate chip ice cream
cider vinegar
9. Classify each of the following as either a pure substance a homogeneous mixture
or a heterogeneous mixture:
ibuprofen
sand and salt
maple syrup
10. Classify each of the following as either a pure substance a homogeneous mixture
or a heterogeneous mixture:
ibuprofen
heterogeneous
pure
sand and salt
heterogeneous
heterogeneous
maple syrup
homogeneous
homogeneous
11. Classify each of the following pure substances as either an element or a
compound:
sugar
aluminum
potassium nitrate
12. Classify each of the following pure substances as either an element or a
compound:
3
3
NaCl
compound
Cu
element
KNO3
compound
3
3
3
3