Vocabulary
Matter
Physical Properties
Changes of State
Chemical Properties
100
A property that can be observed without changing the identity of a substance.
What is physical property?
100
The smallest unit of an element that has the properties of that element.
What is atom?
100
A measure of the amount of matter in an object.
What is mass?
100
The process of changing directly from a solid to a gas without first becoming a liquid.
What is sublimation?
100
Two examples of chemical properties: the ability to catch on fire or burn; and when metals combine with nonmetals from the environment.
What is flammability and corrosion?
200
The way a substance reacts with other substances.
What is chemical property?
200
A particle in the nucleus of an atom that carries one unit of positive electric charge.
What is proton?
200
A measure of how gravity pulls on an object.
What is weight?
200
The particular temperature at which a substance changes state from a solid to a liquid.
What is melting point?
200
Materials that change color in the presence of acids or bases.
What are indicators?
300
The changing of a gas into a liquid.
What is condensation?
300
A particle in the nucleus of an atom that has no electric charge.
What is neutron?
300
A measure of how much space the matter of an object takes up.
What is volume?
300
The temperature at which a substance changes state from a liquid to a gas.
What is boiling point?
300
A substance that tastes sour and turns blue litmus paper red.
What is acid?
400
The change of a liquid into a gas below the boiling point.
What is evaporation?
400
A particle in the space outside the nucleus of an atom that carries one unit of negative electric charge.
What is electron?
400
The amount of matter in a certain volume of a substance; found by dividing the mass of an object by its volume.
What is density?
400
The temperature at which a substance changes state from a liquid to a solid.
What is freezing point?
400
A substance that tastes bitter and turns red litmus paper blue.
What is base?
500
A pure substance that cannot be broken down into any simpler substances through chemical reactions.
What is element?
500
A particle that contains more than one atom joined together.
What is molecule?
500
Is generally the densest state of matter.
What is solid? (Water is the exception to this generalization.)
500
The change in an object's volume due to a change in heat. (growth and decrease)
What is thermal expansion and contraction?
500
The chemical change of an acid and a base into a salt and water.
What is neutralization?
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