stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
Christmas chemistry 2020 ks4 Flashcards | StudBud
Explore
/
Christmas chemistry 2020 ks4
Christmas chemistry 2020 ks4
35 terms
·
StudBud Administration
·
103 plays
chemistry qs for y9+ #ndhs
Flashcards
35 cards
F
Practice quiz
P
Host live
L
Questions
35
Answers
1
When a metal reacts with water it produces a...
hydroxide
acid
nitrate
carbonate
2
What best describes the ethane molecule?
it is an alcohol
it is ionic
it is metallic
it is covalent
3
What is the chemical symbol and name for this element
Cu - cobalt
Au - aurum
Ag - gold
Au - manganese
4
What colour is copper (II) sulfate solution?
blue
red
green
colourless
5
Which one of these elements is a noble gas?
xenon
hydrogen
chlorine
oxygen
6
Which structure of carbon is this?
graphite
buckminster fullerene
graphene
charcoal
7
How many electrons are donated by the magnesium ion in the formation of magnesium chloride?
1
3
4
2
8
Which of these elements is a liquid at room?
bromine
chlorine
fluorine
iodine
9
The periodic table is split into periods, blocks and and...
houses
sections
communes
groups
10
Which giant structure is this?
silicon dioxide
metal
graphite
diamond
11
What is the charge on a sulfate ion?
1+
1-
2-
2+
12
Why does ice float in water?
ice is made of lighter atoms
cold things float
ice is less dense than liquid water
ice is more dense than liquid water
13
What do we call this apparatus in chemistry
Weight taker
electronic balance
mass measurer
weighing scales
14
Who is this?
Albert Einstein
Alfred Nobel
Dmitri Mendeleev
A Richardson
15
Which element is this?
oxygen
fluorine
nitrogen
iodine
16
Rosalind Franklin should have won the Nobel prize for her work in which discovery?
E=mc2
black holes
conservation of mass
DNA
17
Which element has 29 protons?
zinc
manganese
iron
copper
18
Which of these is the most reactive metal?
sodium
calcium
magnesium
potassium
19
Name this apparatus
beaker
measuring cylinder
measuring tube
measuring jug
20
Which of the following statements best describes the halogen chlorine? (at room temperature)
a toxic pale green gas
an ionic white crystal
a sweet brown liquid
none of these
21
Which of these is a balanced chemical equation?
Cs + 2H2O → 2CsOH + H2
2Cs + 2H2O → 2CsOH + H
2Cs + 2H2O → CsOH + H2
2Cs + 2H2O → 2CsOH + H2
22
Which of these elements has the highest relative atomic mass?
S
K
Ar
Cl
23
When testing for a gas, a glowing splint that relights suggests the presence of?
carbon dioxide
nitrogen
oxygen
hydrogen
24
How many elements are there in the third period of the periodic table?
8
18
6
2
25
What is the formula for iron (III) nitrate?
Fe(NO3)2
FeNO33
Fe(NO3)3
Fe3NO3
26
What type of reaction does this profile show?
Mass reduction
Bond dissipation
Exothermic reaction
Endothermic reaction
27
What is the correct order of reactivity for the following elements? (least reactive first)
Li < K <Na < Cs < Rb
Cs < Rb < K < Na < Li
K < Li < Na < Rb < Cs
Li < Na < K < Rb < Cs
28
What temperature does water boil at ?
100 OC
25 OC
0 OC
108 OC
29
What is oxidised at the positive electrode in the electrolysis of CuSO
4
?
OH- anions
SO42- anions
H+ cations
Cu2+ cations
30
What charge does the oxygen ion commonly have?
1-
2+
1+
2-
31
How many neutrons does fluorine have ?
11
9
10
8
32
What is this metal that melts in the hand and proved a prediction from Mendeleev's periodic table?
Exa-aluminium
Gallium
Aluminium
Chromium
33
Name this apparatus?
Dish
Bowl
Evaporating dish
Beaker
34
What best describes the structure of metal?
ions in a sea of delocalised electrons
metal atoms held together with hydrogen bonds
a giant covalent structure
an ionic crystal lattice
35
What is the name of this process?
condensation
evaporation
filtration
distillation
