Chemical Reactions Flashcards
1
Q
The process to rearrange atoms into new substances
A
Chemical reaction
2
Q
Use chemical symbols numbers to represent a substance
A
Chemical formula
3
Q
An expression to show the relationship between the reactants and products
A
Chemical equation
4
Q
Substances that participate in c chemical reaction (start)
A
Reactants
5
Q
Substances that participate in a chemical reaction (end)
A
Products
6
Q
Mass can’t be created or destroyed
A
Law conservation of mass
7
Q
Energy can’t 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
