Chemical Reactions Flashcards
1
Q
The process in which atoms are rearranged to produce 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
Reactants
5
Q
The substances formed in a 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 from a burning candle)
A
Exothermic reaction
