Vocab 5 Flashcards
1
Q
substances formed in a reaction
A
Product
2
Q
Rearrangement of atoms
A
Chemical reactions
3
Q
Symbols and numbers that represent molecules (like H2O)
A
Chemical formula
4
Q
Expression that shows the relationship between the reactant and the product
A
Chemical equation
5
Q
Substances that participate or start a chemical reaction
A
Reactant
6
Q
Reaction with in input of energy
A
Endothermic reaction
7
Q
Reaction with an output of energy
A
Exothermic reaction
8
Q
Matter cannot be destroyed or created; what is there, is there
A
Law of conservation of mass
9
Q
Energy cannot be destroyed or created; what is there, is there
A
Law of conservation of energy
