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