14 terms

Classification of Matter Set B

Ch. 18 Classification of Matter Vocabulary
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Element
All the atoms in a substance have the same identity.
Compound
A pure substance in which the atoms of two or more elements are combined in a fixed proportion.
Mixture
A material made up of two or more substances that can be easily separated by physical means.
Heterogeneous Mixture
A mixture in which different materials can be distinguished easily.
Homogeneous Mixture
Contains two or more gaseous, liquid, or solid substances blended evenly throughout.
Solution
Homogeneous mixture of particles so small that they cannot be seen with a microscope and will never settle to the bottom of their container.
Colloid
A type of homogeneous mixture with particles that are larger than those in solutions but not heavy enough to settle out.
Tyndall Effect
The scattering of light beams as it passes through a colloid.
Suspension
A heterogeneous mixture containing a liquid in which visible particles settle.
Physical Property
Any characteristic of a material that you can observe without changing the identity of the substances that make up the material.
Physical Change
A change in size, shape, or state of matter.
Chemical Property
A characteristic of a substance that indicates whether it can undergo a certain chemical change.
Chemical Change
A change of one substance to another.
Law of Conservation of Mass
Matter is neither created nor destroyed.