Science 42r Flashcards
(9 cards)
1
Q
Process to rearrange atoms into a new substance
A
Chemical reaction
2
Q
Chemical symbols and numbers to represent substances
A
Chemical formula
3
Q
Substances that participate a chemical reaction
A
Reactant
4
Q
The substances formed after a chemical reaction
A
Product
5
Q
Expression that shows the relationship between reactants and products.
A
Chemical equation
6
Q
Mass cannot created or destroyed
A
Law of conversation of mass Mass
7
Q
Energy cannot be created or destroyed
A
Law of conversation of energy
8
Q
I Reaction that has energy input
A
Endothermic
9
Q
Reaction that has energy output
A
Exothermic
