Glossary

Atom: smallest unit of matter

Atmosphere: measurement of pressure equivalent to 101.325 kilopascals

Compound: matter that has been broken down by chemical means into more than one element

Direct variation: when x increase y increases..thus..an expression of X₁/Y₁ = X₂/Y₂ can be set up. A.K.A directly related.

Elastically: without the lost of energy

Gas: substance that takes the shape of and fills its container

Indirect variation: when X increases, Y decreases..thus to solve a problem of indirect variation, an equation of X₁Y₁ = X₂Y₂must be setup. Also know as Indirectly related or Inversely related.

Intermolecular force: force of attraction between two or more molecules

Kelvin scale: temperature scale with zero temperature different from Celsius scale

Kinetic energy: energy of an object because of its motion

Law of partial pressures: principle stating that the total pressure of a mixture of gases in equal to the sum of the partial pressures of the individual gases in the mixture

Molarity: concentration of a solution in moles per liter

Mole: amount of a substance that contains 6.02 * 1023 particles

Molecule: particles made up of more than one atom

Partial pressure: pressure exerted by a gas if it were the only gas in a container

Pascal: SI unit to measure pressure

Reactant: substance that is a starting material before a chemical change

SI base units: system of measurement used in science based on decimal numbers

Standard pressure: average pressure of air at sea level

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