Brainscape's Knowledge GenomeTM

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


See full index

Chemistry AQA > C7 > Flashcards

C7 Flashcards

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

examples of endothermic reactions

A

photosynthesis

thermal decomposition

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

examples of exothermic reactions

A

combustion

neutralisation

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

uses of endothermic changes

A

treating injuries with cold packs

keeping drinks cans cold

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

which endothermic change is used in cold packs?

A

dissolving ammonium nitrate in water

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

formula for ammonium nitrate

A

NH4 NO3

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

chemical reaction that takes place in a hand warmer

A

exothermic, oxidation of iron, which forms hydrated iron oxide

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

how does a reusable hand warmer work

A

saturated solution
crystallises by pressing metal disk
crystals spread through solution, transferring energy to surroundings

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

Chemistry AQA (4 decks)

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