During the cold winter months, the surface of a lake becomes hard ice. This is due to which change of state?
a) Condensation
b) Evaporation
c) Melting
d) Freezing
d) Freezing
The melting of ice cream is an example of which of the following?
a) Chemical change
b) Chemical property
c) Physical change
d) Physical property
c) Physical change
Burning wood represents a chemical change.
a) True
b) False
a) True
The tip of a match is ignited as it is struck against the matchbox. Why is this a chemical change?
a) The color of the match tip has changed.
b) The match changes size as it burns.
c) The tip of the match is flammable and is set on fire.
d) The match is melting.