8th Science Ch. 5 Vocab Flashcards
A compound that changes color in the presence of an acid or a base
Indicator
A material that increases the rate of a reaction by lowering the activation energy
Catalyst
A substance that enters into a chemical reaction
Reactant
A reaction in which one element replaces another in a compound or when the elements in different compounds trade places
Replacement
The amount of one material in a certain volume of another material
Concentration
A reaction that releases energy, usually in thr form of heat
Exothermic Reaction
A chemical reaction that breaks down compounds into simpler product
Decomposition
A short, easy way to show a chemical reaction, using symbols
Chemical Equation
A reaction that absorbs energy
Endothermic Reaction
The prinicple that the total amount of matter is neither created nor destroyed during any chemical pr physical change
Law of Conservation of Mass
A substance formed as a result of chemical reaction
Product
A chemical reaction in which two or more simple substances combine to form a new, more complex substance
Synthesis
