Unit 2: Classification of Matter Physical Science Steinbrink
Matter Anything that has mass and takes up space. Chemistry is the study of this!
Mixture Most common type of matter, two or more substances having separate properties
Homogeneous Mixture A mixture that is evenly mixed, the same throughout, can be separated by physical means
Heterogeneous Mixture Any type of mixture that is made up of different substances in different proportions, not evenly mixed.
Suspension A Heterogeneous mixture in which one substance has groups of particles too heavy to remain mixed, eventually settling occurs.
Gel A colloid in which a liquid is dispersed throughout a solid
Pure Substances The type of matter chemists are most interested in, having identifiable properties, made up of units that are all alike.
Colloid A mixture that can look like a solution but the different substances are held up in suspension, not truly dissolved, will scatter a light beam.
Compound Pure substance made up of two or more types of atoms in a specific ratio, cannot be separated by physical change, has a formula.
Elements Simplest substance of all, atoms are all alike with the same number of protons, cannot be separated, has a symbol, found on periodic table.
Emulsion A colloid in which two liquids are dispersed but not truly dissolved.
Foam A colloid in which a gas is dispersed throughout a liquid or a solid.
Solution Any homogeneous mixture, particles of a solute are completely mixed between particles of a solvent.
Alloy Solution of two or more metals with unique properties but not chemically bonded into a compound.