Question 1
Question
What is a permanent change, that forms a new substance?
Answer
-
BOILING
-
PHYSICAL
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CHEMICAL
-
CRTITICAL
Question 2
Question
There are 7 changes that can be observed in a chemical change.
Question 3
Question
Label the diagram
Answer
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evaporation
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corrosion
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sublimation
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freezing
Question 4
Question
Label the diagram
Answer
-
melting
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boiling
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evaporating
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freezing
Question 5
Question
Label the diagram
Answer
-
corrosion
-
condensation
-
evaporation
-
freezing
Question 6
Question
Label the diagram
Answer
-
evaporation
-
freezing
-
living
-
sublimation
Question 7
Question
Label the diagram
Answer
-
boiling
-
evaporating
-
freezing
-
corrosion
Question 8
Question
A glass bottle breaking is a physical change
Question 9
Question
A battery producing electrical energy in a toy car is a physical change
Question 10
Question
What is an element
Question 11
Question
What is a compound
Answer
-
random circles in a diagram
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a single element chemically joined
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2 or more elements chemically joined in fixed proportions
Question 12
Question
what is a mixture?
Answer
-
1 substance mixed and heated
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two or more substances physically combined and easily seperated
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two or more substances chemically combined and easily seperated
Question 13
Question
A solution is a mixture of a solute dissolved in a solvent.
Question 14
Question
what is a solute?
Answer
-
liquids that mix with each other
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the substance that dissolves in a solvent
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the substance that dissolves in a solution
Question 15
Question
immiscible and miscible both have the same outcome but form in different ways
Question 16
Question
element + [blank_start]element[blank_end] => compound
Answer
-
metal
-
element
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gas
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precipitate
Question 17
Question
magnesium + oxygen => [blank_start]magnesium oxide[blank_end]
Answer
-
magnese oxide
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magnesium oxide
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magnesium dioxide
Question 18
Question
aluminium + iodine => [blank_start]aluminium oxide[blank_end]
Answer
-
aluminium iodide
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aluminium iodine
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alumidide
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aluminium oxide
Question 19
Question
hydrogen + oxygen => [blank_start]water[blank_end]
Answer
-
hydrogen oxide
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hydroxide
-
water
Question 20
Question
Decomposition occurs when [blank_start]one compound[blank_end] is broken down into two or more [blank_start]simpler[blank_end] substances
Answer
-
one compound
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one atom
-
simpler
-
complicated
Question 21
Question
Decomposition is an [blank_start]endothermic[blank_end] process because it requires energy, e.g. heat, electricity or light
Answer
-
endothermic
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exothermic
-
chemical
-
physical
Question 22
Question
Thermal decomposition of mercury oxide
Answer
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cork
-
bung
-
stopper
-
trapezium
Question 23
Question
Thermal decomposition of mercury oxide
Answer
-
mercury oxide
-
liquid
-
water
-
box
Question 24
Question
Thermal decomposition of mercury oxide
Answer
-
delivery tube
-
wire
-
i dont actualy know
-
gas tube
Question 25
Question
Thermal decomposition of mercury oxide
Answer
-
heat
-
endothermic
-
candle
-
lighter
Question 26
Question
Thermal decomposition of mercury oxide
Answer
-
mercury
-
oxygen
-
mercury oxide
-
mercury dioxide
Question 27
Question
Thermal decomposition of mercury oxide
Question 28
Question
Thermal decomposition of mercury oxide
Answer
-
gas collected
-
air collected
-
circles
-
???????????
Question 29
Question
What is the test for water?
Question 30
Question
anhydrous means 'contains water'
Question 31
Question
what is the test for oxygen
Question 32
Question
what is thermal decomposition?
Answer
-
when heat leaves an object
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when heat enters an object
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when a substance is broken down using heat, into 2 or more simpler substances
-
when a compound is broken down using heat into 2 or more simpler substances
Question 33
Question
Thermal decomposition of copper carbonate
Answer
-
delivery tube
-
gas tube
-
stick
-
wire
Question 34
Question
Thermal decomposition of copper carbonate
Answer
-
limewater
-
water
-
salt water
-
copper residue
Question 35
Question
Thermal decomposition of copper carbonate
Answer
-
copper carbonate
-
copper
-
copper balls
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stuff
Question 36
Question
how do you prepare oxygen
Question 37
Question
Laboratory preparation of oxygen
Answer
-
thistle funnel
-
glass funnel
-
decomposition funnel
-
calcium
Question 38
Question
What are the three properties of oxygen?
Question 39
Question
Oxidation is the chemical reaction of a substance with [blank_start]oxygen[blank_end].
An oxidation reaction in which energy is given out is called [blank_start]combustion[blank_end].
Answer
-
oxygen
-
energy
-
air
-
water
-
combustion
-
oxidation
-
a reaction
-
fire
Question 40
Answer
-
magnesium, MG
-
phosphorus, P
-
sulphur, S
Question 41
Answer
-
sodium, NA
-
sodium, S
-
carbon C
Question 42
Answer
-
carbon, C
-
carbon ,K
-
carbon, CA
Question 43
Answer
-
sulphur, S
-
sodium, S
-
Oxygen, O
Question 44
Answer
-
phosphorus, P
-
phosphorus, K
-
pentoxide