Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Chemistry > unit 5 - Exothermic and endothermic reactions > Flashcards

unit 5 - Exothermic and endothermic reactions Flashcards

You may prefer our related Brainscape-certified flashcards:
Periodic Table flashcards Chemistry 101 flashcards AP® Chemistry flashcards Organic Chemistry 101 flashcards
1
Q

What does an exothermic reaction do?

A

transfers thermal energy to the surroundings leading to an increase in the temperature of the surroundings

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

what does an endothermic reaction do?

A

takes in thermal energy from the surroundings, leading to a decrease in the temperature of the surroundings

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

is delta H negative for exothermic or endothermic reactions?

A

exothermic reactions

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

is delta H positive for exothermic or endothermic reactions?

A

endothermic reactions

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

what is enthalpy change (delta H)

A

transfer of thermal energy during a reaction

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

what is activation energy?

A

minimum energy that colliding particles must have to react

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

is bond breaking endothermic or exothermic process?

A

endothermic process

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

is bond making endothermic or exothermic process?

A

exothermic process

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what goes in the x axis of the reaction profile?

A

progress of reaction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what goes in the y axis of the reaction profile?

A

energy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

where does bond breaking occur?

A

between reactants and peak (endothermic)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

where does bond making occur?

A

between peak and product (exothermic)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

examples of endothermic reactions (or exothermic)

A

dissolving and precipitatione

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

examples of exothermic reactions

A

displacement/substitution and neutralisation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

formula for overall energy change

A

product - reactants

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

what is the overall energy change between?

A

reactants and products

17
Q

what is the activation energy between?

A

reactants and peak

18
Q

where do reactants get their energy from?

A

around them (take thermal energy so surrounding feels cold = endothermic reaction) [to make products]

19
Q

what happens to the temperature in exothermic reactions?

A

increases

20
Q

what happens to the temperature in endothermic reactions?

A

decreases

Chemistry (8 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions