787662
Descripción
Test por KatyWright, actualizado hace más de 1 año
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Creado por KatyWright
hace más de 10 años
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Pregunta 1
Pregunta
What colour does the halogen bromine go when burnt?
Respuesta
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Orange
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Green
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Blue
Pregunta 2
Pregunta
Complete the word equation.
Bromine + sodium iodide ->
Respuesta
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Bromine iodide + sodium
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Iodine Bromide + sodium
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Sodium bromide + iodine
Pregunta 3
Pregunta
Sodium reacts with chlorine.
What is the name of the compound made?
Respuesta
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Chlorine sodide
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Sodium chloride
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Sodium and chloride
Pregunta 4
Pregunta
The word equation for the action of heat on copper carbonate, CuCO3, is
Copper carbonate -> copper oxide + carbon dioxide
Write a balanced symbol equation for this reaction.
Respuesta
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CuCO3 -> CuO + CO2
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CuCO -> CO + CO2
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CuCO3 -> 2CO + 2CO2
Pregunta 5
Pregunta
Copper is a transition element.
Suggest the colour of copper carbonate when burnt.
Respuesta
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Purple
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Red
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Green
Pregunta 6
Pregunta
Car bodies can be made from steel or aluminium.
What are two advantages of using aluminium instead of steel?
Respuesta
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Aluminium is lighter than steel It has a natural layer that protects the surface from corrosion
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It is a nicer colour There is more of it
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There aren't any. Steel is better to make cars with than aluminium
Pregunta 7
Pregunta
Car seats can be made from leather.
Leather is attractive to look at.
Write down one other reason why leather is chosen to make car seats.
Respuesta
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It is shiny.
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There aren't any more reasons for why leather is chosen to make car seats.
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They are easier to clean
Pregunta 8
Pregunta
The chemical name for rust is hydrated iron(III) oxide.
Write down the word equation for the rusting of iron.
Respuesta
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Hydrated Iron(III) oxide <- Iron + water + oxygen
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Hydrated Iron(III) <- Iron + water
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Hydrated Iron(III) oxide <- Iron + water + Salt
Pregunta 9
Pregunta
What state is fluorine at room temperture?
Respuesta
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Solid
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Liquid
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Gas
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