Reactions Flashcards
1
Q
Endothermic
A
Takes in energy
Becomes colder
2
Q
Synthesis
A
Put small molecules together to make larger molecules
Ex. C + O2= CO2
3
Q
Decomposition
A
Take apart larger molecules to get smaller molecules, more products than reactants
Ex. H2CO3 = H20+ CO2
4
Q
Single replacement
A
Single pure element takes the place of a different element in a compound
Pure element as a reactant and different one as a product
Ex. Zn+ H2(SO4) = Zn(SO4) + H2
5
Q
Double replacement
A
Two compounds trade cations
KCl + Pb(NO3) = PbCl + K(NO3)
6
Q
Special double replacement
A
Neutralizes reactions
Acid plus base
Reactants acid plus base
Products salt plus H2O
7
Q
Exothermic
A
Gives off energy
Becomes hot
