Chemical Reactions Flashcards
1
Q
Process to rearrange atoms into a new substances
A
Chemical reaction
2
Q
Chemical symbol and numbers to represent a substance
A
Chemical formula
3
Q
Expression to show the relationship between the reactants and products
A
Chemical equation
4
Q
substances that participate in a chemical reaction (start)
A
Reactant
5
Q
substances formed in a chemical reaction (end)
A
Products
6
Q
mass can’t be created or destroyed
A
Law of Conservation of mass
7
Q
energy can’t be created or destroyed
A
Law of conservation of energy
8
Q
chemical reaction w/ an input of energy (photosynthesis)
A
endothermic reaction
9
Q
chemical recation wl an output of energy (heat from a burning candle)
A
exothermic reaction
