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CP chemistry

substances and mixtures

QuestionAnswer
Atom Smallest "building block" of life. Basic unit. Like ones make up elements.
Element Cannot be separated into different parts. Atoms with same atomic #, mass, and #s of protons, neutrons, and electrons.
Compound Composed of 2 or more elements ionically bonded. 1 metal.
homogeneous mixture multiple substances, but uniformly spread throughout. in a pattern
heterogeneous mixture substances are not evenly dispersed throughout. distinct regions.
pure substance constant composition. element, compound, molecule.
colloid has medium sized particles that never settle out. reflect light.
solution liquid containing another substance dissolved into it
suspension the state in which the particles of a substance are mixed with a fluid but are undissolved.
physical change change that you can observe with the senses. NO changes in composition.
chemical change change having to do with chemical reaction, unexpected change in color, temperature. NON REVERSIBLE.
Chemical equation a representation of a chemical reaction using symbols of the elements to indicate the amount of substance, usually in moles, of each reactant and product
chemical formulas a representation of a substance using chemical symbols for its constituent elements H(2) O
chemical symbol an abbreviation or short representation of a chemical element; the symbols in the periodic table. Always composed of an uppercase letter sometimes followed by a lowercase. (Li, H, O, etc.)
conservation of matter the principle that matter cannot be created or destroyed.
Created by: mjwittel
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