Chemistry: Balancing Equations GUHS

Chemistry vocabulary and symbols
STUDY
PLAY
Chemical Equation
A representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products
Chemical Formula
A combination of chemical symbols and numbers to represent a substance
Coefficient
A number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction.
Only this can be changed when balancing equations.
Compound
A substance made up of atoms of two or more different elements joined by chemical bonds
Element
A substance that cannot be separated or broken down into simpler substances by chemical means. An atom is its smallest unit.
Law of Conservation of Matter
Mass can be neither created nor destroyed in ordinary chemical and physical changes.
Mass
A measure of the amount of matter in an object
Matter
Anything that has mass and takes up space
Product
Substances formed/produced/yielded in a chemical reaction
Reactant
A substance or molecule that participates in a chemical reaction
Subscript
A number written below and to the right of a chemical symbol
This can never change when balancing chemical equations.
Volume
A measure of the size of a body or region.
Yield sign
The arrow in the middle of a chemical equation that separates reactants and products
Chemical Change
A change that occurs when one or more substances change into entirely new substances with different properties.
Chemical Property
A property of matter that describes a substance's ability to participate in chemical reactions.
Chemical Reaction
The process by which one or more substances change to produce one or more different substances.
Endothermic Reaction
A chemical reaction that requires/absorbs heat.
Exothermic Reaction
A chemical reaction in which heat is released to the surroundings.
Precipitate
A solid that is produced as a result of a chemical reaction in solution.
(l)
Liquid not to be confused with aqueous solution.
(aq)
Aqueous. The form when a substances is dissolved in water or someother specified solvent.
(s)
Solid
(g)
Gas