Question | Answer |
Product | substance formed in chemical reaction |
phase | a part of a sample with uniform composition and properties |
physical change | alters a substance without changing its composition |
liquid | matter that flows but has definite volume |
mass | amount of matter that an object contains |
element | the simplest form form of matter with an unique set of properties |
solid | matter with a definite shape and volume |
solution | homogenous mixture |
compound | contains two or more elements chemically combined in a fixed proportion |
What are some general characteristics of a substance in the liquid state? | definite volume, able to flow, not easily compressed |
In the chemical reaction iron plus oxygen -> iron oxide, | iron is a reactant |
Which term does not fit in with the others listed?
a) solid c) gas
b)reactant d) liquid | b) reactant |
Whats the chemical symbol for sodium? | Na |
A basketball has more mass then a golfball because? | the basketball contains more matter |
A gas is a form of matter that | takes shape and volume of its container |
Homogenous solutions are known as? | solutions |
A compound.. | is a pure substance |
physical properties of a substance include | color and change, malleability, melting and boiling points. |
When iron and oxygen combine to form iron oxide, | a chemical change occurs |
During chemical and physical changes, substances can absorb or give off_____________. | energy |
During_________, a liquid is boiled to produce a vapor that is then condensed again to a liquid. | distillation |
Mixtures differ from substances because the composition of a mixture can ________. | vary |
When iron and sulfur combine to from iron sulfide, a ______ change takes place. | chemical |