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Vocabulary 43-63

Bouyancy Able to float because of its shape
Density The amount of molecules in matter that allows it to sink or float.
Gravity A force that pulls all objects that have mass toward one another.
Physical properties A characteristic of a substance that can be measured or observed
Phases of Matter/ States of Matter Solid, Liquid, Gas
Solid Has a definite shape and volume, tightly packed together. Does not flow easily and cannot be poured from one container into another.
Liquid Does not have a definite shape but does have a definite volume. Changes to the shape of the container.
Gas Does not have definite shape or volume, flows easily from one place to another, particles are less tightly packed and expand freely to fill any space available.
Boiling When a liquid changes to a gas
Freezing When a liquid changes to a solid
Melting When a solid changes to a liquid
Mixture A combination of two or more different types of matter that can be separated easily and keep their own physical properties.
Solution A type of mixture in which one substance dissolves into another.
Solubility A measure of how much a certain substance will dissolve into another substance
Solvent The liquid that does the dissolving
Solute The powder that gets dissolved
Dissolve To form a solution with another substance. Becomes so small you can no longer see but it is still there.
Magnetism A force that can attract (pull closer) or repel (push away) magnetic materials.
Attract A force that causes objects to pull together
Repel A force that causes objects to push back away from one another.


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