Brainscape's Knowledge GenomeTM

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


See full index

End Of Years > Chemistry End of Year 8 > Flashcards

Chemistry End of Year 8 Flashcards

1
Q

What are the numbers in the pH scale?

A

0-14

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

What pH are the weakest acids?

A

6

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

What pH are the strongest acids?

A

0

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

What pH are neutral substances?

A

7

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

What pH is the weakest alkali?

A

8

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

What pH is the strongest alkali?

A

14

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

What is an indicator?

A

Something that changes colour to show whether something is an acid, an alkali or a neutral

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

What are the two popular indicators?

A

Litmus paper and universal indicator

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

What is the difference between litmus paper and universal indicator?

A

Litmus paper only indicates if something is acid or alkali but universal indicator shows how strong it is

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

Acid+alkali->

A

salt+water(neutral)

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

Hydrochloric acid+sodium hydroxide->

A

Sodium chloride+water

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

HCl+NaOH->

A

NaCl+H₂0

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

In chemical reactions, nothing gets…

A

Created or destroyed

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

In chemical reactions atoms BLANK themselves.

A

Re-arrange

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

What get broken in the re-arranging of atoms in chemical reactions?

A

Chemical bonds

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

No BLANK is lost in a chemical reaction.

A

Mass

17
Q

What are 3 examples of visible changes that may occur in a chemical reaction?

A

Gas coming off, solid being formed, a change in colour

18
Q

What are the 3 things needed for combustion?

A

Fuel heating and oxygen

19
Q

What are hydrocarbons?

A

Fuel containing only hydrogen and carbon

20
Q

Hydrocarbon + oxygen->

A

Carbon dioxide+water

21
Q

Combustion is an example of a BLANK reaction.

A

Oxidation

22
Q

What is an example of an oxidation reaction other than combustion?

A

Rusitng

23
Q

What is thermal decomposition?

A

A reaction where a substance breaks down into two or more other substances while being heated.

24
Q

Is thermal decomposition a chemical reaction or chemical change?

A

Chemical change

25
Q

Copper carbonate->

A

Copper oxide + carbon dioxide

26
Q

CuC03->

A

CuO+CO2

End Of Years (4 decks)

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