energy changes Flashcards

1
Q

exothermic reactions

A

release energy - get hot
ex = out (exist)
thermic = relating to heat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

endothermic reactions

A

absorb energy - gets cold
en = in (entrance)
thermic = relating to heat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

examples of exothermic reactions

A
  • combustion
  • respiration
  • neutralisation of acids with alkalis
  • reactions of metals with acids
  • the thermic process
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

examples of exothermic reactions

A
  • combustion
  • respiration
  • neutralisation of acids with alkalis
  • reactions of metals with acids
  • the thermic process
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

examples of exothermic reactions

A
  • combustion
  • respiration
  • neutralisation of acids with alkalis
  • reactions of metals with acids
  • the thermic process
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

examples of exothermic reactions

A
  • combustion
  • respiration
  • neutralisation of acids with alkalis
  • reactions of metals with acids
  • the thermic process
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

examples of endothermic reactions

A
  • thermal decomposition eg. calcium carbonate in the blast furnace
  • photosynthesis
  • some types of electrolysis
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

activation energy

A

all reactions need a certain amount of energy to get started, this is called activation energy. activation energy is needed to start breaking bonds of reactions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

bond energy

A

bond energy is the amount of energy needed to break or make a bond

How well did you know this?
1
Not at all
2
3
4
5
Perfectly