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23 terms

What's the Matter? Unit Vocabulary

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Solution
A mixture that forms when one substance dissolves another.
Element
A pure substance made of only one kind of atom
Mixtures
a physical combination of substances that can still be seperated
Homogenous Mixture
a mixture in which the composition is uniform throughout
Heterogeneous Mixture
A mixture in which different materials can be distinguished easily
Volume
The amount of space matter takes up
Density
A ratio that compares the mass of an object to its volume.
Mass
A measure of the amount of matter in an object
Solubility
The ability of a substance to dissolve in another substance.
Physical change
A change in a substance that does not change its identity
atom
Smallest unit of matter
Smallest unit of an element
matter
Anything that has mass and takes up space
compound
A substance made of two or more elements chemically combined
molecule
A group of atoms bonded together
melting point
The temperature at which a solid becomes a liquid
soluable
Able to be dissolved
phase change
A change from one state of matter to another
boiling point
The temperature at which a liquid changes to a gas
solute
Substance being dissolved
solvent
Substance doing the dissolving
heat
A form of energy that is transferred by a difference in temperature.
pure substance
Matter that has the same composition and properties throughout
saturation
is when no more solute can be dissolved in a solvent in a solution.

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