Exam Revision

Question 1

What increases the rate of a reaction

Answer 1

Increased temperature 
Increased concentration 
Increased surface area 
Decreased particle size 
Using a catalyst

Question 2

What are the seven diatomic molecules

Answer 2

H
N
F
O
I
Cl
Br

Question 3

What kind of elements form covalent bonds

Answer 3

Non metals

Question 4

What’s the nuclide notation used for

Answer 4

Showing the atomic number, mass number and charge of atoms

Question 5

In which places do covalent molecules have strong and weak bonds and attractions

Answer 5

Strong bonds within molecules and weak attractions between molecules

Question 6

Describe the solubility of covalent molecular

Answer 6

Insoluble in water but may dissolve in other solvents

Question 7

Describe the solubility of covalent network

Answer 7

Do not dissolve

Question 8

What is an ionic bond

Answer 8

The electrostatic force of attraction between a positively charged metal ion and a negatively charged non metal ion

Question 9

Describe the solubility of ionic compounds

Answer 9

Soluble in water

Question 10

When does an ionic compound conduct

Answer 10

When molten or in a solution (Crystal lattice has been broken)

Question 11

Why can ions conduct

Answer 11

Because of the delocalised ions they are free to move towards oppositely charged electrodes

Question 12

What does (-ite) and (-ate) mean

Answer 12

Oxygen is present

Question 13

What do the Roman numerals indicate

Answer 13

The valency of the element

Question 14

What is a group ion

Answer 14

Ions containing more than one atom type

Question 15

What is formed when a solute dissolves in water

Answer 15

A solution

Question 16

What do soluble metal oxides form when dissolved in water

Answer 16

Acidic solutions

Question 17

What to soluble metal oxides form when dissolved in water

Answer 17

Alkaline solutions

Question 18

Metal oxide + water -> ?

Answer 18

Metal hydroxide

Question 19

Base + acid -> ?

Answer 19

Salt + water

Question 20

Metal carbonate + acid -> ?

Answer 20

Salt + water + carbon dioxide

Question 21

What are spectator ions

Answer 21

Ions that do not take part in the chemical reaction

Question 22

What does an acid-base titration determine? And how?

Answer 22

The concentration of the acid or base by accurately measuring the volumes used in the neutralisation reaction. Indicator can be used to show the end point of the reaction.

Question 23

How are titrations used to produce an uncontaminated salt solution?

Answer 23

After the titration when the volumes of both acid and alkali have been noted the titration can be repeated to produce the uncontaminated salt solution which can be evaporated to dryness

Question 24

What is a homologous series

Answer 24

A family of compounds with similar chemical properties that can be represented by a general formula

Question 25

State the properties of Alkanes, some uses and the general formula

Answer 25

saturated ; insoluble in water Fuels Cn H2n+2

Question 26

State the properties of Cycloalkanes, some uses and the general formula

Answer 26

Saturated ; insoluble in water Fuels ; solvents Cn H2n

Question 27

State the properties of alkenes, some uses and the general formula

Answer 27

Unsaturated ; insoluble in water ; C=C functional group Polymers ; alcohols Cn H2n

Question 28

Alkene + hydrogen -> ?

Answer 28

Alkane

Question 29

Alkene + halogen (group 7) -> ?

Answer 29

Dihaloalkanes

Question 30

Alkene + water -> ?

Answer 30

Alcohols [hydration reaction]

Question 31

State the properties of Alcohols, some uses and the general formula

Answer 31

Saturated ; as size increases solubility decreases ; (-OH) hydroxyl Fuels ; solvents Cn H2n+1OH

Question 32

State the properties of carboxylic acids, some uses and the general formula

Answer 32

As size increases solubility decreases ; as size increases melting and boiling point increase due to the strength of the inter molecular forces ; (-COOH) Perservatives ; soaps ; medicines Cn H2n+1COOH

Question 33

What name is given to an experiment where heat energy is released

Answer 33

Exothermic

Question 34

The name is given to an experiment when heat energy is taken in

Answer 34

Endothermic

Question 35

[Combustion] Hydrocarbon (or alcohol) + O2 -> ? + ?

Answer 35

Carbon dioxide + energy

Question 36

What is produced when incomplete combustion occurs

Answer 36

Carbon monoxide

Question 37

What is metallic bonding

Answer 37

The electrostatic force of the attraction between positively charged ions bs delocalised electrons

Question 38

Metal + oxygen -> ?

Answer 38

Metal oxide

Question 39

Metal + water -> ? + ?

Answer 39

Metal hydroxide + hydrogen

Question 40

Metal + dilute acid -> ? + ?

Answer 40

Salt + hydrogen

Question 41

What is electrolysis

Answer 41

The decomposition of n ionic compound to its elements using electricity

Question 42

Is the products of electrolysis are yet to be identified what power supply is to be used

Answer 42

A d.c. supply

Question 43

What is an ion bridge used for?

Answer 43

To link the half cells. Ions can move across the bridge to complete an electrical circuit

Question 44

What is a polymer

Answer 44

A long chain of molecules formed bu joining together a large number of small molecules called monomers

Question 45

What is addition polymerisation

Answer 45

When unsaturated monomers are joined forming a polymer

Question 46

What elements are required for plant growth

Answer 46

Nitrogen, phosphorus and potassium

Question 47

Describe ammonia

Answer 47

A pungent, clear, colourless gas when dissolved in water produces an alkaline solution

Question 48

Ammonia + acid -> ? + ?

Answer 48

Ammonium salt + water

Question 49

Give the Haber process word equation

Answer 49

N2 + 3H2 -> 2NH3 (this reaction is reversible)

Question 50

What catalyst is used in the Haber process

Answer 50

Iron

Question 51

What catalyst is used in the Ostwald process

Answer 51

Platinum

Question 52

Give a word equation for the Ostwald process

Answer 52

NH3 + O2 + H2O -> HNO3

Question 53

What is the end product of the Haber process

Answer 53

Ammonia

Question 54

What is the end product of the Ostwald process

Answer 54

Nitric acid