Chemical Reactions Flashcards
1
Q
What are indicators of chemical reactions?
A
- Color change
- Formation of gas
- Formation of precipitate
- Emission of odor
- Emission of light or heat
2
Q
Exothermic
A
Reactions that release energy to their surroundings (gets hot)
3
Q
Endothermic
A
Reactions that need to absorb heat from their surroundings (gets cold)
4
Q
Reactants
A
The substances you start with (undergoes the change)
5
Q
Products
A
The substances you end up with (ending material)
6
Q
Energy
A
All chemical reactions are accompanied by a change in energy
7
Q
Chemical Reaction
A
A process in which a substance is transformed into a new substance through chemical change
- Atoms are rearranged
8
Q
Combination Reaction
A
A + B = AB
9
Q
Decomposition Reaction
A
AB –> A + B
10
Q
Single Replacement Reaction
A
AB + C –> BC
11
Q
Double Replacement Reaction
A
------ ( | AB + CD --> CB + AD | ) -----
