The gas in the air that reacts with metals most easily is:
A argon.
B carbon dioxide.
C nitrogen.
D oxygen.
A metal that does not react with the air is:
A calcium.
B gold.
C iron.
D magnesium.
The gas which is given off when metals react with water is:
A carbon dioxide.
B hydrogen.
C oxygen.
D nitrogen.
Sodium reacts with water to form:
A sodium chloride.
.
B sodium oxide.
C sodium hydroxide
D sodium carbonate.
The gas which is given off when metals react with acids is:
When magnesium reacts with sulfuric acid, it forms:
A magnesium oxide.
B magnesium chloride.
C magnesium sulfate.
D magnesium carbonate.
Look at these diagrams, and then choose the correct order of reactivity for metals X, Y and Z (the most reactive metal should be first).
A) Z, X, Y
B) Y, Z, X
C) X, Y, Z
D) Z, Y, X
Choose the correct statement to complete this word equation: zinc + sulphuric acid →
A) zinc + sulfur + acid
B) zinc hydrate + sulfur
C) zinc sulfate + hydrogen
D) zinc hydroxide + hydrogen
Iron is more reactive than copper. If a piece of iron is put into copper sulfate solution, what would you see?
A) Brown copper would appear on the iron.
B) Blue copper would appear on the iron.
C) Nothing would happen.
D) The iron would dissolve completely.
Zinc is more reactive than tin. It will displace tin from a compound. Choose the correct statement to complete this word equation: zinc + tin sulphate →
A) zinc + tin sulfate
B) zinc + zinc sulfate
C) tin + zinc sulfate
D) tin + zinc chloride
Copper is more reactive than silver. Iron is more reactive than copper. This means that:
A copper will react with iron nitrate solution.
B silver will react with iron nitrate solution.
C iron will react with silver nitrate solution.
D silver will react with copper nitrate solution.
Zinc reacts with copper sulphate solution and silver nitrate solution. This means that zinc ..........
A) is more reactive than copper and silver.
B) is less reactive than copper and silver.
C) is less reactive than copper but more reactive than silver.
D) is less reactive than silver but more reactive than copper.
Some window frames are made of aluminium. It is a good metal to use because:
A) it conducts electricity.
B) it conducts heat.
C) it does not melt easily.
D) it does not react very quickly with air or water.
Magnesium would react more slowly with acid if you:
A) added more acid.
B) added more water.
C) heated the acid.
D) used a more concentrated acid.
The test for hydrogen gas is that it:
A) pops a lighted splint.
B) relights a glowing splint.
C) turns cobalt chloride paper pink.
D) turns limewater milky.
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