classification of matter Flashcards
what are the two types of matter?
- pure substances
- mixtures
what are the two types of pure substances?
- elements
- compounds
what are the two types of mixtures?
- homogeneous
- heterogeneous
what are the two types of homogeneous mixtures?
- solutions
- colloids
what are the two types of heterogeneous mixtures?
- suspension
- heterogeneous
what is an element?
represented on the periodic table by an atomic symbol
what cannot be further decomposed?
elements
what is a compound?
chemical combination of two or more elements
what can be decomposed by chemical reaction?
compounds
what is a homogeneous mixture?
same appearance throughout; single phase
what is a solution composed of?
a solvent and a solute
what is a solute?
substance dissolved
what is a solvent?
substance dissolving
what is a colloid?
particles do not settle out through time; cannot see particles with eye; very thick and sticky
what is a heterogeneous mixture?
components can be distinguished; not uniform in appearance; possibly more than one phase