Subjects

Front 1

Pure Substance

Back 1

a sample of matter with both definte amd constant with distinct chemical properties

Front 2

Element

Back 2

one of a class of substances that cannot be separated into simpler substances.

Front 3

Atom

Back 3

1. the smallest component of an element having the chemicalproperties of the element, consisting of a nucleus containingcombinations of neutrons and protons and one or more electronsbound to the nucleus by electrical attraction; the number of protonsdetermines the identity of the element.

Front 4

Compound

Back 4

composed of two or more parts, elements, or ingredients:

Front 5

Heterogeneous mixture

Back 5

any combination of substances that does not have uniform composition andproperties; a mixture of physically distinct substances with differentproperties

Front 6

Homogeneous mixture

Back 6

any combination of substances that has uniform composition andproperties; a mixture that is uniform throughout

Front 7

Solution

Back 7

1. the process by which a gas, liquid, or solid is dispersedhomogeneously in a gas, liquid, or solid without chemical change.
2. such a substance, as dissolved sugar or salt in solution.
3. a homogeneous, molecular mixture of two or more substances.

Front 8

Suspension

Back 8

1. the state in which the particles of a substance are mixed with a fluidbut are undissolved.
2. a substance in such a state.

Front 9

Colloid

Back 9

a substance made up of a system of particles withlinear dimensions in the range of about 10 −7to 5 × 10 −5cm dispersedin a continuous gaseous, liquid, or solid medium whose propertiesdepend on the large specific surface area. The particles can be largemolecules like proteins, or solid, liquid, or gaseous aggregates and theyremain dispersed indefinitely.