Brainscape's Knowledge GenomeTM

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


See full index

AS Chemisrty > C6 Types Of Reaction- Pecipitation, Acid-Base And Redox > Flashcards

C6 Types Of Reaction- Pecipitation, Acid-Base And Redox Flashcards

1
Q

Indicator

A

A substance that changes colour with a change in pH

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

Acid

A

Proton donor

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

Strong acid

A

A proton donor that completely dissociates into ions in water

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

A weak acid

A

A proton donor that only partially dissociates into its ions in water

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

Base

A

Proton acceptor

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

Alkali

A

A soluble base

It can accept protons in solution

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

Salt

A

Formed when an acid has one or more of its hydrogen ions replaced by either a metal ion or an ammonium ion

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

Precipitation reaction

A

A cation and an anion in a solution combines to from an insoluble substance that precipitates out as a solid

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

Redox reaction

A

A reaction when both oxidation and reduction occurs

OIL RIG

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

Oxidation number

A

Identifies to number of electrons transferred in a reaction to determine whether a reaction has undergone reduction, oxidation or both

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

Oxidation rules

A

All elements in their natural state have the oxidation number zero
Oxidation numbers of the atoms of any molecule add up to 0
Oxidation numbers of the components of any ion add up to the charge of that ion

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

Calculating oxidation numbers

Rules

A
  1. The oxidation numbers of the elements in groups 1, 2 and 13 are always +1, +2 and +3 respectively
  2. The oxidation number of fluorine is always -1
  3. The oxidation number of hydrogen is usually +1
  4. The oxidation number of oxygen is usually -2
  5. The oxidation number of chlorine is usually -1
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Oxidising agent

A

Encourages oxidation. It is a substance that receives electrons readily

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

Reducing agent

A

Encourages reduction. It is a substance that donates electrons readily

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

Reaction of an acid and a base-neutralisation

A

Salt + water

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

Reaction of an acid and an alkali-neutralisation

A

Salt + water

17
Q

Reaction of an acid and a carbonate-neutralisation

A

Salt +water + carbon dioxide

18
Q

Reaction of an acid and a metal

A

Salt + hydrogen

19
Q

Test for carbonate ions

A

Carbonate + dilute acids = salt + water + carbon dioxide

Bubbles given off/ effervescence

20
Q

Tests for sulphate ions

A

Sulphates can be detected by adding a solution of barium chloride.
A white precipitate of BaSO4 is produced

21
Q

Tests for Halide ions

A

Halides can be detected by adding a solution of silver nitrate
Precipitates are formed
Ammonia can be added to identify Cl and Br
Cl- White precipitate
Br- cream precipitate
I- yellow precipitate

22
Q

Tests for ammonium

A

Can be detected by warming NH4^+ with dilute sodium hydroxide
NH3 is produced which turns moist red litmus paper blue

AS Chemisrty (14 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions