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