Measuring Energy Changes Flashcards
1
Q
Endothermic reactions include
A
Thermal decomposition of metal carbonates
2
Q
The amount of energy produced can be measured by what
A
Mixing the reactants in a man insulated container
- this enables temp change to be measured before heat is lost to surroundings
- would be suitable for neutralisation reactions as reactions involving solids
3
Q
In a chemical reaction, new substances are produced:
A
- bonds in reactants are broken
- new bonds are made to form products
4
Q
Breaking a chemical bond requires energy-
A
ENDOTHERMIC PROCESS
5
Q
When a new chemical bond is formed, energy is given out-
A
EXOTHERMIC PROCESS
6
Q
If more energy is released when bonds are formed than is needed to break bonds, reaction must be
A
Exothermic
7
Q
If more energy is required to break bonds than is released when bonds are formed, it must be
A
Endothermic
