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- Multiple ChoicePlease save your changes before editing any questions.
Able to be drawn into wire is
malleable
insulator
lustre
ductile
- Multiple ChoicePlease save your changes before editing any questions.
In chemistry, a displacement reaction is where
a more reactive metal displaces a less reactive metal from its compound
two reactive metals join together to form an alloy
a less reactive metal displaces a more reactive metal from its compound
a more reactive metal is removed from its compound by a less reactive metal
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Look at part of the reactivity series? Which one of the following statements is correct?
zinc is more reactive than magnesium
copper is the most reactive
tin is more reactive than lead
lead is more reactive than aluminium
- Multiple ChoicePlease save your changes before editing any questions.
calcium is more reactive than iron. What will be produced when calcium sulphate and iron are mixed together?
no reaction happens so the reactants stay the same
calcium and iron sulphate
iron sulphate and hydrogen
water and iron sulphate
HIDE ANSWER
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When metal reacts with liquid water the products are...
metal hydroxide and oxygen gas
metal hydroxide and hydrogen gas
metal oxide and oxygen gas
metal oxide and hydrogen gas
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The list which contains only metals is .......
aluminium, copper, nitrogen
iron, oxygen, hydrogen
iron, silver, aluminium
iron, sulphur, copper
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Metals generally react with dilute acids to produce hydrogen gas. Which one of the following metals does not react with dilute hydrochloric acid?
magnesium
iron
aluminium
copper
- Multiple ChoicePlease save your changes before editing any questions.Describe what luster meansHow an object reflects lightHow soft an object isIf an object floatsIf an object can be dug out of the earth.
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Metals create _________ ions, because they give away (lose) electrons.
positive
negative
neutral
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The metal which can be cut with knife.
Iron
Silver
Sodium
Magnisium
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Magnesium reacts with oxygen to make
magnesium oxide / basic in nature
magnesium oxide / acidic in nature
- Multiple ChoicePlease save your changes before editing any questions.What is formed when sodium reacts with water?sodium oxide and hydrogensodium hydroxide and hydrogensodium hydroxide and oxygensodium hydroxide and carbon dioxide
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The chemical symbol for iron
Ir
Fe
I
Fn
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copper+carbon dioxide+water+oxygen=copper hydroxide+______________
copper carbonate
carbon dioxide
copper oxide
Don't know
- Multiple ChoicePlease save your changes before editing any questions.
Zn, Fe, Al and Mg. When we arrange these elements in the ascending order of their
reactivity series we get
Mg < Al < Zn < Fe
Al < Mg < Fe < Zn
Zn < Al < Mg < Fe
Fe < Zn < Al < Mg