Chemical Change Vocab Flashcards
1
Q
Process to rearrange atoms into new substances
A
Chemical reaction
2
Q
Chemical symbols a numbers to represent a susance
A
Chemical formula
3
Q
expression to show the relationship between reactants and products
A
Chemical equation
4
Q
substances that participate in a reaction (start)
A
Reactants
5
Q
substances formed in a 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 destroyed
A
Law of Consevation of energy
8
Q
reaction with an input ot energy (photosynthesis)
A
endothermic reaction
9
Q
reaction with an output/release of energy (feel heat from burning)
A
exothermic reaction
