Chemical reactions Flashcards
1
Q
Process to rearrange atoms into new substances
A
Chemical Reaction
2
Q
Chemical symbols and numbers to represent a substance
A
Chemical Formula
3
Q
Expression to show the relationship between the reactants and products
A
Chemical Equation
4
Q
Substances that participate in a chemical reaction (Start)
A
Reactant
5
Q
Substances formed in a chemical reaction (End)
A
Products
6
Q
Mass cannot be created or destroyed
A
Law of Conservation of Mass
7
Q
Energy cannot be created or destroyed
A
Law of Conservation of Energy
8
Q
Chemical reaction with an input of energy (Photosynthesis)
A
Endothermic Reaction
9
Q
Chemical reaction with an output of energy. (Heat of a candle.)
A
Exothermic Reaction
