General

Question 1

Which group is group 1

Answer 1

Alkali metals (Lithium sodium potassium rubidium caesium francium)

Question 2

Which group is group 2

Answer 2

Alkaline earth metals (Beryllium magnesium calcium strontium barium radium)

Question 3

Give common non metals in group 16

Answer 3

Oxygen Sulphur

Question 4

What does a period mean

Answer 4

How many eelctron levels an element has

Question 5

What does a group indicate

Answer 5

How many electrons it has in the outer shell

Question 6

Which group is group 17

Answer 6

Halogens (Fluorine chlorine bromine iodine astatine)

Question 7

Which group is group 18

Answer 7

Noble gases (Helium neon argon krypton xenon radon)

Question 8

What happens to equilibrium when you increase conc. of reactants?

Answer 8

Moves right to remove added reactants

Question 9

What happens to equilibrium when you decrease conc. of reactants?

Answer 9

Moves left to replace some of the reactants

Question 10

What happens to equilibrium when you increase conc. of products?

Answer 10

Moves left to remove added products

Question 11

What happens to equilibrium when you decrease conc. of products?

Answer 11

Movcs right to replace products

Question 12

What happens when you increase temperature to equilibrium?

Answer 12

Moves to oppose change.

Moves to the endothermic side, so there are less products of the exothermic reaction.

And vice versa

Question 13

What happens to equilibrium when you increase pressure?

Answer 13

Moves to the side with fewer molecules to lower the pressure. More of the side with fewer molecules is produced.

Question 14

Equation for volume of gas at RTP

Answer 14

Moles * 24

Question 15

Oxidation state of a group 1 metal in a compound?

Answer 15

+1

Question 16

Oxidation state of a group 2 metal in a compound?

Answer 16

+2

Question 17

Oxidation state of oxygen in a compound? (and exception)

Answer 17

-2

Exception = In peroxides like H2O2, O = -1
When combined with fluorine eg OF2 O= +2

Question 18

Oxidation state of a hydrogen atom in a compound?

Answer 18

Almost always +1

Question 19

Do ionic compounds have low or high melting points?

Answer 19

High

Question 20

Do molecular compounds have low or high melting points?

Answer 20

Low

Question 21

Do molecular substances conduct electricity?

Answer 21

No❤️

Question 22

Melting point of giant covalent substances

Answer 22

High

Question 23

Which giant covalent substance conducts electricity?

Answer 23

Graphite as there are delocalized electrons between layers

Question 24

Do group 1 metals conduct?

Answer 24

Yes, heat and electricity

Question 25

Trend of melting points of group 1 metals

Answer 25

Low for metals, decrease down the group

Question 26

Trend of density of group 1 metals

Answer 26

Low for metals, increases down the group

Question 27

Trend of hardness of group 1 metals

Answer 27

Soft and become softer going down

Question 28

Trend of reactivity of group 1 metals

Answer 28

Get more reactive going down. Very reactive.

Question 29

Trend of melting points of group 17 elements

Answer 29

Low, increase down the group

Question 30

Do group 17 elements conduct

Answer 30

No❤️

Question 31

Reactivity series of halogens for displacement

Answer 31

Chlorine Bromine Iodine (decreasing)

Question 32

Trend of melting points for group 18 elements

Answer 32

Very low, increase down the group

Question 33

Trend of densities of noble gases

Answer 33

Increase down the group

Question 34

How to work out Rf

Answer 34

distance travelled by sample / distance travelled by solvent

Question 35

Is neutralisation often endo or exothermic?

Answer 35

Exothermic

Question 36

Is breaking bonds exothermic or endothermic?

Answer 36

Endothermic

Question 37

Is making bonds exothermic or endothermic?

Answer 37

Exothermic

Question 38

Does an exothermic reaction have a positive or negative energy change?

Answer 38

Negative

Question 39

How do you calculate enthalpy change?

Answer 39

Bonds broken - bonds formed

Question 40

Which electrode is the anode?

Answer 40

The positive one, where ions are oxidised

Question 41

Which electrode is the cathode?

Answer 41

The negative one, where ions are reduced

Question 42

Why is DC used in electrolysis rather than AC?

Answer 42

Because current has to pass in one direction only.

Question 43

When will hydrogen be produced at the cathode?

Answer 43

In aqueous solutions when the metal ions are are MORE reactive than hydrogen, hydrogen ions will be reduced

Question 44

When will oxygen be produced at the anode

Answer 44

In aqeuous solutions OH- ions will be oxidised, unless there are halide ions present

Question 45

What happens when alcohols react with sodium?

Answer 45

Produce hydrogen gas and a colourless solution such as sodium ethoxide

Question 46

What is the general formula of a carboxylic acid

Answer 46

CnH2n+1COOH

Question 47

Which metals are less reactive than hydrogen?

Answer 47

Copper silver gold and platinum

Question 48

Which metals can be extracted from their ores using reduction by carbon or carbon monoxide?

Answer 48

Metals less reactive than carbon | Zinc, Iron, Tin, Lead and those below Hydrogen

Question 49

Common properties of transition metals

Answer 49

able to form stable ions in different oxidation states form coloured compounds used at catalysts

Question 50

Test for hydrogen

Answer 50

Squeaky pop with burning splint

Question 51

Test for Oxygen

Answer 51

Relights glowing splint

Question 52

Test for carbon dioxide

Answer 52

Turns limewater cloudy

Question 53

Test for chlorine

Answer 53

Damp blue litmus paper turns red and is then bleached

Question 54

Test for carbonates

Answer 54

React with dilute acid. Releases carbon dioxide

Question 55

Test for halides

Answer 55

Aq. solution of silver nitrate and dilute nitric acid. | Forms precipitate with silver

Question 56

Colour of Silver Iodide

Answer 56

Yellow

Question 57

Colour of Silver Bromide

Answer 57

Cream

Question 58

Colour of Silver Chloride

Answer 58

White

Question 59

Test for sulfates

Answer 59

Add dilute Nitric acid or HCl, followed by barium nitrate or chloride. White precipitate of BaSO4 formed.

Question 60

In what order should tests for anions be conducted?

Answer 60

Carbonates Sulfates Halides

Question 61

What is the flame test colour for lithium?

Answer 61

Crimson red

Question 62

What is the flame test colour for Sodium?

Answer 62

Yellow-orange

Question 63

What is the flame test colour for Potassium?

Answer 63

Lilac

Question 64

What is the flame test colour for Calcium?

Answer 64

Red-orange

Question 65

What is the flame test colour for Copper?

Answer 65

Green

Question 66

How can you test for metal cations?

Answer 66

Add sodium hydroxide to a solution of the metal ion. Precipitate formed

Question 67

Sodium hydroxide test colour for Magnesium ions?

Answer 67

White

Question 68

Sodium hydroxide test colour for Calcium ions?

Answer 68

White

Question 69

Sodium hydroxide test colour for Aluminium ions?

Answer 69

White

Question 70

Sodium hydroxide test colour for Copper ions?

Answer 70

Blue

Question 71

Sodium hydroxide test colour for Fe2+ ions?

Answer 71

Green

Question 72

Sodium hydroxide test colour for Fe3+ ions?

Answer 72

Brown

Question 73

How do you test for water?

Answer 73

Add water to copper(II) sulfate crystals, turns blue

Question 74

How to greenhouse gases lead to global warming?

Answer 74

Let through shortwave radiation, reflect longwave radiation

Question 75

What is the danger of SO2 sulphur dioxide?

Answer 75

Sulfuric acid rain

Question 76

What is the danger of Nitrous oxides?

Answer 76

Nitric acid rain