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15 Cards in this Set

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  • Back
Substance
a type of matter with a fixed compound
Element
a pure substance in which all the atoms are identical
Compound
a substance in which the atoms of two or more elements are combined in a fixed proportion
Heterogenous mixture
mixture in which different materials can be distinguished easily
Homogenous mixture
contains two or more gaseous, liquid, or solid substances blended evenly throughout
Solution
homogenous mixture of particles so small that they can’t be seen with a microscope and will never settle to the bottom of their container
Colloid
type of mixture with particles that are larger than those in solutions but not heavy enough to settle
Tyndall effect
scattering of light by colloid particles
Suspension
Heterogenous 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 that material
physical change
a change in size, shape, or state of matter
distillation
the process for separating substances in a mixture by evaporating a liquid and recondensing its vapor
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 matter
scientific law that states the mass of all substances that are present before a chemical change equals the mass of all the substances that remain after a change