Chemical reactions Flashcards
(9 cards)
1
Q
Chemical reaction
A
Process in which atoms are rearranged to produce new substances
2
Q
Chemical equation
A
An expression to show the relationship between reactions and products
3
Q
Reactant
A
Substances that participate or start a chemical reaction
4
Q
Products
A
Substances that are formed in a chemical reaction
5
Q
Law or conservation of mass
A
Matter can’t be created or destroyed
6
Q
Coefficient
A
Number in front of the chemical formula, can change to balanced the equation
7
Q
Endothermic reaction
A
Chemical reaction with an input of energy
8
Q
Exothermic reaction
A
Chemical reaction with an output of energy
9
Q
A
