Brainscape's Knowledge GenomeTM

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


See full index

GCSE Chem > Key Information > Flashcards

Key Information Flashcards

You may prefer our related Brainscape-certified flashcards:
GCSE Geography - AQA flashcards AP® Chemistry flashcards GCSE Religious Studies - Edexcel Route B flashcards GCSE Religious Studies - Eduqas Route A flashcards GCSE Religious Studies - Edexcel Route A flashcards GCSE Religious Studies - Eduqas Route B flashcards Periodic Table flashcards Chemistry 101 flashcards Organic Chemistry 101 flashcards
1
Q

What is the charge on ion ARGON:

A

Ag^+

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

What is the charge on ion IRON:

A

Fe^2+ / Fe^3+

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

What is the charge on ion ZINC:

A

Zn^2+

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

What is the charge on ion COPPER:

A

Cu^2-

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

What is the charge on ion LEAD:

A

Pb^2+

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

What is the charge on ion HYDROGEN:

A

H^+

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

What is the charge on ion HYDROXIDE:

A

OH^-

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

What is the charge on ion AMMONIUM:

A

NH4^+

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

What is the charge on ion CARBONATE:

A

CO3^2-

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

What is the charge on ion NITRATE:

A

NO3^-

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

What is the charge on ion SULFATE:

A

SO4^2-

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

Covalent formula of AMMONIA:

A

NH3

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

Covalent formula of Hydrogen, Chlorine and Nitrogen?

A

Hydrogen - H2
Chlorine - Cl2
Nitrogen - N2

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

Covalent formula of Hydrochloric acid?

A

HCl

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

Covalent formula of Water and Carbon Dioxide

A

Water - H20

Carbon Dioxide - CO2

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

Covalent formula of Methane

A

CH4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Covalent formula of Ethane

A

C2H6

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Covalent formula of Chloromethane

A

CH3CL

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Covalent formula of Ethene

A

C2H4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

General formula of an Alkane

A

Cn H2n+2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

General formula of an Alkene

A

Cn H2n

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What are the two structures for a covalent bond?

A

Simple Molecular

Giant Covalent

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q 
Explain the state symbols;
s
l
g
aq
A

s - Solid
l - Liquid
g - Gas
aq - Aqueous (dissolved in water/solvent)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What is meant by the Mr

A

Relative Formula Mass

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

How is the Mr calculated? For a compound?

A

Adding the Atomic Masses (Ar) of each atom in the compound

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

What is meant by the Ar

A

Relative Atomic Mass - The number of (Proton and Neutron) atoms in the Nucleus

27
Q

What is meant by the RMM - Relative Molecular Mass

A

The RMM is the same as the Relative Formula Mass (Ar)

28
Q

How large is a mole?

A

6.023 x10^23

= 602 300 000 000 000 000 000 000

29
Q

What is the Empirical Formula?

A

The smallest whole number ratio of atoms in a compound

30
Q

What is the Molecular Formula?

A

Whole number multiples of empirical formulae

31
Q

Alkali Metals (Group 1’s) reaction with water:
Does it react?
What is produced in the reaction?

A

They react vigorously with water

Produces a Metal Hydroxide of Hydrogen

32
Q

Do the Alkali Metals (Group 1’s) react with oxygen in the air?

A

Yes they form metal oxides

33
Q

What is the name fr group 7 Elements?

A

The Halogens

34
Q

Which group of elements take place in Displacement reactions?

A

Group 7 - The Halogens

35
Q

What is a displacement reaction?

A

A reaction where a more reactive element “pushes out” (displaces) a less reactive element from a compound.

36
Q

What does the acronym OIL RIG stand for?

A

Oxidation Is Loss , Reduction Is Gain

37
Q

What is an oxidising agent?

A

Accepts electrons and gets reduced

38
Q

What is a reducing agent?

A

Donates electrons and gets oxidised

39
Q

What is a redox reaction?

A

Reactions where Oxidation and Reduction happen at the same time.

40
Q

What is formed when a metal carbonate is heated?

A

Carbon Dioxide & a Metal Oxide

41
Q

What are the two ways to prevent rusting?

A

Barrier Methods

Sacrificial Methods

42
Q

What are the barrier methods of coats?

A

Plastic painting/coating - The barrier stops water and oxygen.
Oiling/Greasing - For moving parts, like bike chains

43
Q

Sacrificial methods?

A

Placing a more reactive metal with Iron. The water and oxygen then react with the sacrificial metal instead of iron.

44
Q

What is galvanising?

is it a barrier method or a sacrificial method?

A

It is a sacrificial method for preventing rusting by spraying a Zinc coating onto an object.

45
Q

Universal indicator used to find?

A

The pH of an aqueous solution

46
Q

Litmus paper used for?

A

Whether a solution is acidic, neutral or alkaline.
Red = Acidic
Blue = Alkaline

47
Q

Phenolphthalein used for?

A

Acidic or Alkaline
Colourless in acidic
Bright pink in alkaline

48
Q

Methyl Orange used for?

A

Acidic or Alkaline
Red in Acidic
Yellow in Alkaline

49
Q

pH of an acid and an alkaline

A

Acid < 7

Alkaline > 7

50
Q

What is a base and an acid?

A

An acid is a proton donor.

A base is a substance that can neutralise an acid.

51
Q

Formula of a Carbonate?

A

CO3^2-

52
Q

Pure Water has a boiling point of ………….C and a freezing point of ……….C.

A 
Bp = 100*C
Mp = 0*C
53
Q

What experiment is used to find out enthalpy changes?

A

Calorimetry

54
Q

What is shown in the General Formula?

A

An algebraic formula that can describe any member of a family of compounds.
Eg. Ethene = C2H2N

55
Q

What is shown in the Empirical Formula?

A

The simplest whole number ratio of atoms of each element in a compound
Eg. Ethene =CH2

56
Q

What is shown in the Structural Formula?

A

Shows the arrangement of atoms carbon by carbon with the attached hydrogen and functional groups.
Eg. Ethene = CH2CH2

57
Q

What is shown in the Molecular Formula?

A

The actual number of atoms in each element of the molecule

Eg. Ethene = C2H4

58
Q

What is shown in the Displayed Formula?

A

Shows the arrangement of atoms and the bonds between them.

59
Q

General Formula for Alkenes

A

C2H2n

60
Q

General formula for Alkanes

A

C2H2n+2

61
Q

Conditions required for cracking of hydrocarbons?

A

600-700*C

With a Silica or Alumina catalyst

62
Q

Products formed from incomplete combustion?

A

Carbon Dioxide
Water
Carbon Monoxide
Carbon (soot)

63
Q

Products formed in complete combustion?

A

Carbon Dioxide

Water

64
Q

What is responsible for acid rain?

A

Sulphur Dioxide and Nitrogen Oxides mixing with water vapour in clouds, forming dilute sulfuric acid and nitric acid

GCSE Chem (19 decks)

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