stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
AQA GCSE C2 Chemistry (quiz 1) Flashcards | StudBud
Explore
/
AQA GCSE C2 Chemistry (quiz 1)
AQA GCSE C2 Chemistry (quiz 1)
32 terms
·
StudBud Administration
·
2,041 plays
#aqa #additional #chemistry
Flashcards
32 cards
F
Practice quiz
P
Host live
L
Questions
32
Answers
1
The rate of a reaction depends on the...
...volume of solutions.
...location of the experiment.
...frequency of collisions.
2
Which of these is a disadvantage of using catalysts?
They slow down reactions too much.
They are often expensive to buy.
They can't be reused.
3
The rate of a reaction can be found using the amount of reactant used or...
...amount of product formed over a period of time.
...amount of product used over a period of time.
4
_______________ is used to manufacture aluminium from aluminium oxide.
Electricity
Electroplating
Electrochemistry
Electrolysis
5
Thermosetting polymers have...
...weak intermolecular forces of attraction.
...tangled polymer chains.
...polymer chains with cross-links.
...low melting points.
6
Why is cryolite used during the production of aluminium from its oxide by electrolysis?
It increases the melting point of aluminium.
It lowers the melting point of aluminium oxide.
It lowers the melting point of aluminium.
It increases the temperature.
7
Sulphuric acid and aluminium react to produce...
...aluminium oxide and sulphur.
...aluminium sulphate and oxygen.
...aluminium sulphate and hydrogen
...aluminium oxide and hydrogen.
8
What type of bond is formed when two hydrogen atoms form a molecule?
covalent
metallic
ionic
giant covalent
9
True / False? Low and high density poly(ethene) are made using the same catalyst.
False
True
10
What is the yield of a reaction?
The amount of products produced in a reaction
The temperature of a product.
The mass of reactants used in a reaction.
The amount of product obtained in a reaction.
11
Which of these could you use to make the salt lead chloride?
lead nitrate and sodium chloride
lead nitrate and zinc sulphate
lead nitrate and magnesium sulphate
12
True / False? "Gas chromatography can be linked to mass spectroscopy."
True
False
13
Fluorine is in Group 7 of the Periodic Table. What is the charge on a fluoride ion?
1-
1+
7+
7-
14
True or False? "H
+
ions are oxidised during the electrolysis of NaOH solution."
False
True
15
What is the problem with using acids and alkalis to make soluble salts?
Acids and alkalis don't react together.
Acids and alkalis explode when they're put together.
It requires a lot of equipment.
It can be hard to tell when they've finished reacting.
16
In electrolysis, the electrolyte must be...
...liquid.
...gas.
...molten.
...solid.
17
What is the activation energy of a reaction?
The minimum amt of energy needed by the particles to react.
The amount of energy used to start a reaction.
The maximum amt of energy needed by the particles to react.
The amount of energy used to complete a reaction.
18
True or False? "Oxidation reactions always involve oxygen."
True
False
19
True or False? "Pure metals are harder than alloys."
False
True
20
Simple molecular substances have __________.
...strength
...high electrical conductivity
...high solubility in water.
... low boiling points
21
What is a reversible reaction?
One in which the products can react to produce the reacants
One in which the products can react to produce more products
22
Which of these uses an endothermic reaction?
hand warmers
self-heating cans for drinks
sports injury packs
photosynthesis
23
If the relative atomic mass of H=1 and O=16, what is the relative formulae mass of H
2
O?
18
19
17
16
24
Giant covalent structures have...
...low melting points.
...high melting points.
...moderate solubility.
...high solubility.
25
What is nitinol?
A nanoparticle
A thermosoftening polymer
A thermosetting polymer
A shape memory alloy
26
A reversible reaction takes in more energy in one direction than it gives out in the opposite.
False
True
27
An ionic compound is made up of sodium and bromide ions. What is its formula?
NaBr
Na2Br2
NaBr2
Na2Br
28
What is the overall charge on an ionic compound?
0
-1
+1
+2
29
True and False? "H
2
O is a giant ionic substance."
True
False
30
T/F: Energy is always transferred to or from the surroundings during a chemical reaction.
True
False
31
T/F: Isotopes of an element have the same atomic number, but different mass numbers.
False
True
32
Which of these reactions would be fastest?
3cm magnesium strip with dilute HCl
3cm magnesium strip with concentrated HCl
three 1cm magnesium strips with dilute HCl
trhee 1cm magnesium strips with concentrated HCl
