Chemical reactions Flashcards
1
Q
process to rearrange atoms into new substances
A
Chamical reaction
2
Q
Chemical symbols and numbers to represent a substance
A
Chemical formula
3
Q
expression to show the relationship between the reactants + prodits
A
Chemical equation
4
Q
substances that participate in a chemical reaction (Start)
A
Reactants
5
Q
substances formed in a chemical reaction (end)
A
Products
6
Q
mass can not be created or destroyed
A
Law of conservation of mass
7
Q
energy can not be created or destrayed
A
Law of conservation of energy
8
Q
chemical
reaction with an input of energy (photosynthesis )
A
Endothermic radiation
9
Q
reaction with an output of energy ( heat from a burning candle
A
Exothermic reaction
