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Chemistry exams

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
Created by: acallen