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10X5 Chemistry quiz
10X5 Chemistry quiz
80 terms
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Covering AQA units C1, C2, C3, C5, C6 and C7.
Flashcards
80 cards
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Practice quiz
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Questions
80
Answers
1
When sodium chloride solution is electrolysed what is produced at the negative electrode?
Oxygen
Sulphate
Hydrogen
Copper
2
Is ice melting a exo or endothermic reaction
Endothermic
Exothermic
3
What is the first element on the periodic table?
Oxygen
Lithium
Helium
Hydrogen
4
Name three Giant Covalent Structures
Silicon, Carbon, Lead
Diamond, graphite, Silicon dioxide
Diamond, gold, salt
NaCl, MgO, KBr
5
Metals ...
Form positive ions
Do not form ions
Form negative ions
Have a 50-50 chance of forming positive or negative ions
6
Exothermic bond calculations produce a negative figure
False
True
7
On the pH scale, a pH 3 is...
weak acid
weak base
strong base
strong acid
8
Group 7 elements form ions with a charge of ...
-7
-1
+7
+1
9
What do giant covalent structures contain?
Molecules
Atoms
Oppositely charged ions
Positive ions and delocalised electrons?
10
What are states of matter?
liquid, texture, gas
solid, liquid, color
solid, liquid, gas
shape, temperature, gas
11
Which group on the periodic table is the most reactive?
Transition metals
Alkali metals
Halogens
Alkaline-earth metals
12
exothermic
is freezing
releases heat into the enviroment
is really warm
takes energy in
13
Covalent bonding takes place between...
Metals only
Non-metals only
Group 0 only
A metal and a non-metal
14
Groups on the periodic table are arranged vertically.
True
False
15
Many salts, acids & bases are electrolytes. What does that mean?
They are found in Powerade.
They conduct electrical currents.
They are all polar compounds.
They are all organic.
16
Endothermic, Exothermic or neither?
Endothermic
Exothermic
Neither
17
Giant ionic lattices have ....
high melting points and are mainly solids at room temp
high boiling points and are mainly gases at room temp
low boiling points and are mainly gases at room temp
low melting points and are mainly liquids at room temp
18
What structure has a diamond ?
Giant Metallic Bond
Giant Ionic Bond
Giant Crystal Bond
Giant Covalent Bond
19
Which statement about the extraction of aluminium is false?
Aluminium oxide is found in the ore bauxite..
Aluminium is above carbon in the reactivity series.
Aluminium oxide has a very high melting point.
Aluminium oxide has the formula AlO2.
20
How are elements in the periodic table organized?
Increasing number of electrons
Most reactive to least reactive
Based on physical and chemical properties
Alphabetically
21
Group 1 are also known as...?
Alkali metals
Halogens
Nobel gases
Alkali earth metals
22
Which of the following has covalent bonding?
Zinc sulfate
Sodium chloride
Methane
Copper
23
In ionic bonding, electrons are
transferred
unused
ions
shared
24
During the making salts practical copper oxide must be added in excess. Why?
To improve repeatability
To keep the control variables the same
To ensure all acid is reacted
To ensure all the copper oxide has reacted
25
Covalent bonding is when
electrons are given
electrons are gained
electrons are shared
electrons are lost
26
Why is cryolite used in the extraction of aluminium?
Because it makes the aluminium melt at a lower temperature.
Because it makes the aluminium purer.
It separates the aluminium oxide from the ore.
Because it is a cheaper source of Al than aluminium oxide.
27
Endothermic, Exothermic or neither?
Neither
Exothermic
Endothermic
28
Group 1 ions always have what charge?
1-
2-
1+
2+
29
A property of ionic bonding is .....
low melting and boiling points
never conducts electricity
never dissolves in water
high melting and boiling points
30
What are the diagrams used to show covalent bonding called?
Hot-Cross Diagrams
Dot-Cross Diagrams
Noughts and Crosses Diagrams
Tick-Cross Diagrams
31
Giant ionic lattices are held together by .....
a sea of free, delocalised, electrons
many strong covalent bonds
a strong electrostatic attraction of oppositely charged ions
weak inter-molecular forces between molecules
32
The majority of the elements in the periodic table are...?
Metalloids
Not elements
Metals
Non-metals
33
Ionic bonding happens between....
non-metals and metals
metals and metals
non-metals and non-metals
34
Dot cross diagrams show which type of bonding?
Ionic
Covalent
Metallic
35
Electrolysis of CuSO
4(aq)
, at the cathode, what will be produced?
hydrogen
oxygen
copper
sulphate
36
Noble gases are un-reactive.
True
False
37
Who made a huge contribution to the development of the periodic table?
Niels Bohr
Dmitri Mendeleev
Alexander Flemming
Ernest Rutherford
38
What is produced when making
soluable
salts?
precipitation
crystals
gas
39
What is formed during ionic bonding?
Two anions
Two cations
Two oppositely charged ions
Two ions with the same charge (anions or cations)
40
A covalent bond means that .....
electrons have been swapped
electrons have been shared
electrons are not involved in the bond
41
T/F All the group 7 elements are gasses at room temperature
False
True
42
Covalent bonding occurs between..?
Metal & Metal
Non-Metal & Non-Metal
Metal & Non-Metal
43
As you move down group 1 alkali metals the reactivity...?
Decreases
Stays the same
Increases
Goes on vacation
44
A displacement reaction is
a more reactive metal displaces a least reactive one
A least reactive metal displaces a more reactive one
A more reactive compound wins
45
When copper (Cu2+) ions get to the negative electrode....
The ions are reduced
They lose 2 electrons and become neutral
They gain 2 electrons and become neutral
They gain 2 electrons and become negative
46
Ionic bonding forms a...
Small molecule
Lattice
Line
Gas
47
What element has the electronic structure 2?
Hydrogen
Carbon
Oxygen
Helium
48
In electrolysis of copper chloride.....
Copper (Cu2+) ions go to the negative electrode
Copper (Cu2+) ions go to the negative electron
Copper (Cu2+) ions go to the positive electron
Copper (Cu2+) ions go to the positive electrode
49
A neutralisation reaction makes
Salt + Water
Salt + Hydroxide
Salt
Salt + Hydrogen
50
What is the charge of an electron?
No charge
Negative
Positive
51
Group 2 ions always have what charge?
1-
2+
1+
2-
52
Which non-metal in the reactivity series?
Hydrogen
Carbon
Tin
53
Water on the pH scale with a pH of 7 is _____.
Neutral
Acidic
Negative
Alkaline
54
What holds ions together?
delocalised electrons
intermolecular forces
sharing electrons
electrostatic forces of attraction
55
Group Seven elements have ...
varying numbers of electrons in their outer shell
full outer shells
seven electrons in their outer shell
one electron in their outer shell
56
Metal ions are always...
Negative
Positive
57
A metal that loses an electron becomes
A charged particle
A careless particle
Reduced
Negative
58
Ionic bonding is bonding between:
Non-Metals and Non-Metals
Metals and Non-Metals
Ions and non Ions
Metals and other Metals
59
Covalent bonding involves electron....
transfer
movement
sharing
exchange
60
Define Electrolysis
Separating out chemicals from a solution
Splitting compounds into atoms using electricity
Splitting elements and molecules using electricity
Using electricity to break down ionic compounds
61
The reactivity series can be used to:
Predict reactions
Predict who will win the premier league
None of these
Move metals around the table
62
Group 1 metals are reactive because they...?
Have a nearly full outer shell of electrons
Have one electron in their outer shell
have a large amount of protons
Have a full outer shell of electrons
63
In electrolysis, what is formed at the negative electrode if the metal is very reactive?
Chlorine
Hydrogen
Oxygen
The metal
64
What is produced when making
soluable
salts?
precipitation
gas
crystals
65
Where are nonmetals found on the periodic table?
to the left of the heavy stairstep line
along the heavy stairstep line
to the right of the heavy stairstep line
to the left of the transitional metals
66
Non-metal ions are always...
Positive
Negative
67
Group 7 in the periodic table is called...
the alkali metals
the noble gases
the alkaline earth metals
the halogens
68
Which of these has a giant covalent structure?
gold
sodium chloride
graphite
Water
69
What is produced at the cathode during the electrolysis of copper(II) sulfate solution?
Hydrogen
Oxygen
Copper
Sulfur
70
During covalent bonding, what happens to electrons?
The are stolen
They are shared
They are destroyed
71
Neutralisation
None
Set acids and alkalines on fire
Seperating acids and alkalines
Adding acids and alkalines
72
The elements in Group 7 of the periodic table are ___________.
non-metals
period
metals
group
73
Breaking a bond
gives out energy
is exothermic
takes no energy
takes energy from the suroundings
74
Endothermic bond calculations produce a negative figure
false
true
75
When lead bromide is electrolysed what is formed at the positive electrode?
Oxygen
Hydrogen
Bromine
Lead
76
Dot and cross diagrams
Show the location of all the electrons
Shows relative positions of all the atoms in a molecule & the bonds between
Show arrangement of outer shell electrons of atoms or ions in a substance
Uses balls To represent atoms and sticks to represent chemical bonds
77
Covalent or Ionic?
Covalent
Ionic
78
What are the properties of giant covalent lattices such as diamond ?
brittle
conduct electricity
high meltingpoint
soapy
79
Group 7 ions always have what charge?
2+
1+
2-
1-
80
What is the formula for calculating temperature change in CHEMISTRY?
Final temp - Initial temp
Initial temp-Final temp
