999 Flashcards
(9 cards)
1
Q
Chemical reaction
A
Process in which atoms are arranged to make a new substance
2
Q
Chemical equation
A
And expression to show the reaction relationship between reacts plus products
3
Q
Reactants
A
The substance that participate in a chemical reaction
4
Q
Product
A
Substances formed in a chemical reaction
5
Q
Law of conservation of mass
A
A mass matter cannot be created or destroyed
6
Q
Coefficient
A
Number in front of a chemical formula can change to balance and equation
7
Q
Endothermic reaction
A
A chemical reaction with input of energy
8
Q
Exothermic react
A
A chemical reaction with an output of energy
9
Q
A
