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PVMS Chemistry Terms

The 50 words you need to know!

absolute zero lowest possible temperature; temperature at which particles of matter almost stop moving
acid substance that reacts with metals to release hydrogen
alloy substance made of a mixture of two or more metals
atom smallest part of an element that can be identified as that element
atomic mass total mass of the protons and neutrons in an atom
atomic number number of protons in the nucleus of an atom
base substance formed when metals react with water
chemical change change that produces new substances
chemical equation statement in which chemical formulas are used to describe a chemical reaction
chemical formula way of writing the name of a compound using chemical symbols
chemical reaction process in which new substances with new chemical and physical properties are formed
chemical symbols shorthand way of writing the names of the elements
chemistry study of matter and its reactions
coefficient number that shows how many molecules of a substance are involved in a chemical reaction
compound substance made up of two or more elements chemically combined
covalent bond bond formed when atoms share electrons
density mass per unit volume
electron atomic particle with a negative electric charge
elements simple substances that cannot be broken down into simpler substances
family (group) vertical column of elements in the periodic table
indicator substance that changes color in acids and bases
insoluble not able to dissolve
ion an atom with an electrical charge
ionic bond bond formed between atoms that have gained and lost electrons
isotope atom of an element with the same number of protons but a different number of neutrons
mass amount of matter in an object
matter anything that has mass and takes up space
metals elements that have the properties of luster, ductility, and malleability
mixture two or more substances that have been mixed together but not chemically combined
molecule smallest part of a substance that has all the properties of that substance
neutral neither acidic or basic
neutron atomic particle with neither a negative nor a positive electric charge
nonmetals elements that have none of the properties of metals
nucleus center, or core, of an atom
organic compound compound containing carbon
oxidation chemical reaction in which electrons are lost
oxidation number number of electrons an atom gains, loses, or shares when it forms a chemical bond
period horizontal row of elements in the periodic table
periodic repeating pattern
pH scale measure of the concentration of hydrogen ions or hydroxyl ions in a solution
physical change change that does not produce new substances
product substance that is formed in a chemical reaction
proton atomic particle with a positive electric charge
reactant substance that is changed in a chemical reaction
soluble able to dissolve
solute substance that is dissolved
solution mixture in which one substance is evenly mixed with another substance
solvent substance in which a solute dissolves
subscript number written to the lower right of a chemical symbol
valence electrons electrons in an atom's outer energy level
Created by: Ms Potts



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