Category 1
Category 2
Category 3
Category 4
Category 5
100
An indication that a chemical change has taken place.
release of energy
100
Temperature at which liquid changes to gas.
boiling point
100
Property that could be used to indicate physical or chemical change.
color
100
Melting is an example
physical change
100
The ability to burn is an example
chemical change
200
An example of a change of state is _____________.
evaporating
200
The process of a liquid changing into a gas is called __________.
vaporization
200
The process of a solid changing directly into a gas, without ever becoming a liquid is called ___________.
sublimation
200
Food spoiling is an example
chemical change
200
When a liquid changes to a gas, this is called
vaporization
300
Rusting iron is an example
chemical change
300
The process in which a gas changes directly into a solid, without ever becoming a liquid is called ___________.
deposition
300
The process of a gas changing to a liquid is called ___________.
condensation
300
When a piece of paper is crumbled, this is a change of
shape
300
When salt dissolves in water, it has changed
form
400
Look at the chemical equation. The part on the right of the arrow is the _____________. MgO + C ------> CO + Mg
product
400
A banana browning in the air is an example
chemical change
400
Leaves changing color is an example
chemical change
400
True or false. A chemical change cannot be reversed.
True
400
During all changes, physical and chemical, mass is ___________.
conserved
500
What are the properties of oxygen?
normally a colorless, odorless, tasteless, nonflammable gas
500
What are the properties of copper oxide?
a black crystal
500
Look at the chemical equation. The part on the left is the ___________. Cu + O ------> CuO
reactant
500
What are the properties of carbon dioxide?
a colorless, odorless gas
500
What are the properties of carbon monoxide?
a flammable and highly toxic gas
M
e
n
u