stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
AQA Additional Chemistry Revision (2) Flashcards | StudBud
Explore
/
AQA Additional Chemistry Revision (2)
AQA Additional Chemistry Revision (2)
40 terms
·
StudBud Administration
·
139 plays
MCQ on fact-recall questions
Flashcards
40 cards
F
Practice quiz
P
Host live
L
Questions
40
Answers
1
Why are group 8 elements unreactive?
They have the same number of protons
They all have eight electrons in their outer shells
They all have two electrons in their outer shells
They all have full outer shells
2
How do isotopes differ from each other?
They have different numbers of electrons
They have different number of protons
They different numbers of neutrons
They are different elements
3
How big are nanoparticles?
About 100,000 atoms
Smaller than an atom
Roughly, a few hundred atoms
Only one to two atoms
4
How can you tell if a reaction is exothermic?
The temperature increases
The temperature falls
The temperature stays the same
The test tube feels colder
5
Which shell fills with electrons first?
The shell furthest away from the nucleus
The shell closest to the nucleus
It doesn't matter; its random
The middle shell
6
What does "A
r
" represent?
The relative mass of argon
The relative mass of an atom
The relative mass of a molecule
The relative mass of a proton
7
One use of nanoparticles is...
as polymers
as drug delivery systems
as smart alloys
as plastics
8
What is the name of the ore of aluminium?
Ballite
Balconite
Bauxite
Cryolite
9
Which of the following is a salt?
sodium nitrate
potassium carbonate
magnesium oxide
sodium hydroxide
10
What information does an atomic number give you?
Number of electrons
Number of protons only
Number of neutrons and protons
Number of neutrons only
11
The bonding between simple molecules is...
Covalent bonding
Intermolecular forces
Ionic bonding
Intramolecular forces
12
What is an ion?
An atom which has gained a proton
A positively or negatively charged particle
An atom which has lost a proton
An atom which has lost or gained a neutron
13
Why do ionic compounds need to be molten or in solution for electrolysis?
To allow the electrons to move
To allow the ions to move to the electrodes
The particles need energy
Its easier that way
14
Increasing concentration increases rate because...
Answers 1 and 3 only
Lowers activation energy
Increases energy of collision
Increases frequency of collision
15
How many electrons do group 1 have in their outer shells?
2
8
0
1
16
What is oxidation?
It is the gain of electrons
It is the loss of electrons
It is the gain off protons
It is the loss of protons
17
What is an alkali?
A soluble acid
A type of salt
A insoluble base
A soluble base
18
Which of these have delocalised electrons in their structure?
Metals
Diamonds
Ionic compounds
All of these options
19
If a compound is made from two non-metals what is the type of bonding present?
Dative
Ionic
Covalent
Intermolecular
20
Why do the carbon anodes need to be replaced in the electrolysis of aluminium?
They get dust stuck on them
They react with the oxygen produced
They get clogged up with aluminium metal
They get melted in the heat of electrolysis
21
What do catalysts do?
Speed up reactions
Increase energy in reactions
Slow down reactions
Speed up reactions without being used up or changed
22
Why do metals have high melting points?
They have strong intermolecular forces
They are good conductors
They are giant structures
They have ionic bonds between the atoms
23
What property do smart alloys have?
They are very strong
They have a high surface area : volume ratio
They were created by somebody smart
Shape-memory
24
Which type of polymer has cross-links between chains?
Thermosoftening
Thermosetting
None of the above
High density polyethene
25
Why do elements in the same group have similar chemical properties?
They have the same number of neutrons
Its just a coincidence
The have the same number of outer shell electrons.
They have the same number of protons
26
What is cryolite used for?
Increases the melting point of aluminium oxide
It makes it easier to melt aluminium oxide
It acts as the cathode
Making the aluminium oxide soluble
27
What is empirical formula?
The formula of a molecule
The simplest ratio of elements in a compound
The chemical formula of paracetamol
The formula used to balance equations
28
Which of the following is a property of graphite?
It is a good conductor of electricity
It has a low melting point
It is hard
It cannot conduct electricity
29
Complete the half equation: 2O
2-
- 4e
-
= ?
2O
O2
2O2
4O
30
Complete the half equation: Pb
2+
+ 2e
-
= ?
Pb
2 Pb
Pb2-
Pb2
31
Graphite is very soft because...
it is almost a liquid
it has weak forces between its layers
it is a simple molecule
it has a low melting point
32
Which type of polymer can be moulded and reshaped when heated?
None of the above
Thermosetting
Thermosoftening
High density polyethene
33
In diamond, each carbon atom is bonded to...
four other carbon atoms
no others; diamond isn't made from carbon
three other carbon atoms
two other carbon atoms
34
How does an increase in tempertaure speed up reaction rate?
Increases the frequency of collisions
Increases energy of the particles
Lowers the activation energy
Answer 1 and 3 only
35
What substances are made in the electrolysis of brine?
Sodium hydroxide, chlorine and hydrogen
Sodium, hydrogen, oxygen and chlorine
Sodium metal and chlorine gas
Sodium chloride and water
36
What is an advantage of using an instrumental method rather than chromatography?
It is very accurate
It is very sensitive
It is very fast
All of the options listed
37
Which of the following is an alkali?
sodium hydroxide
All of the options
ammonia solution
potassium hydroxide
38
A precipitate is...
A solid made from two solutions
An acidic substance
A solution made from two solids
A type of acid rain
39
What is the chemistry mole?
A very small number
The relative mass of a substance in grams
The relative mass of a substance in tonnes
A fluffy animal
40
What is the relative mass of a neutron?
Nearly nothing
1
Its too small to tell
0
