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AQ LS 1 and 2


Matter anything that has volume(takes up space) and has mass.
Pollutant A substance that can make air, soil, or water harmful to organisms and structure.
Volume A measure of how much space something takes up.
Mass The amount of "stuff" something contains.
Atom The basic building block of matter.
Molecule A combination of two or more atoms.
Compound A pure substance made up of two or more different elements.
Pure substance A type of matter composed of a single type of particle and always has distinct, predictable properties.
Physical change A change in the form of appearance of matter, but not in its composition.
Chemical Changes A change in the composition, or chemical make up, of a sample of matter. A chemical change is also unknown as a chemical reaction.
Photosynthesis The process through which green plants use the energy of sunlight to make food and oxygen.
Qualitative data Data that approximates or characterizes but does not measure the attributes, characteristics, properties, etc., of a thing or phenomenon.
Quantitative data Data that can be quantified and verified, and is amenable to statistical manipulation.