Reactivity of Metals and Displacement Reactions Quiz

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Which metal is the most reactive among A, B, C, and D?

Metal D

What would you observe if metal B is added to a solution of Copper(II) sulphate?

A displacement reaction, where metal B displaces copper and forms its own compound.

Arrange the metals A, B, C, and D in the order of decreasing reactivity.

D > B > A > C

What gas is produced when dilute hydrochloric acid is added to a reactive metal?

Hydrogen gas (H2) Signup and view all the answers

What would you observe when zinc is added to a solution of iron(II) sulphate?

Zinc will displace iron and form zinc sulphate, with iron being deposited. Signup and view all the answers

Why do metals react by displacing other metals in reactions?

Metals react to achieve a more stable electron configuration by attaining a filled valence shell. Signup and view all the answers

What are the three categories in which metals can be grouped based on reactivity?

Metals of low reactivity, Metals of medium reactivity, Metals of high reactivity Signup and view all the answers

Why are metals at the top of the reactivity series like K, Na, Ca, Mg, and Al never found in nature as free elements?

They are so reactive that they are never found in nature as free elements. Signup and view all the answers

Which element is very abundant on Earth and is the reason why many metal ores are oxides?

Oxygen Signup and view all the answers

Why are metals like Zn, Fe, and Pb mainly found in the earth's crust as oxides, sulphides, or carbonates?

They are moderately reactive and are found in the earth's crust mainly as oxides, sulphides, or carbonates. Signup and view all the answers

Give an example of metals found in the free state.

Gold, silver, platinum, copper Signup and view all the answers

Why are the metals in the middle of the activity series considered moderately reactive?

Metals like Zn, Fe, Pb, etc., are moderately reactive compared to others. Signup and view all the answers

What are non-metals like in terms of malleability and ductility?

Non-metals are neither malleable nor ductile. Signup and view all the answers

Which non-metal conducts electricity?

Graphite conducts electricity. Signup and view all the answers

What kind of ions do non-metals form when reacting with metals?

Non-metals form negatively charged ions by gaining electrons. Signup and view all the answers

Why are food cans coated with tin and not zinc?

Food cans are coated with tin because zinc is more reactive than tin. Signup and view all the answers

How could you distinguish between samples of metals and non-metals using a hammer, battery, bulb, wires, and a switch?

By attempting to pass electricity through the samples using the battery, bulb, wires, and switch. Signup and view all the answers

Why do non-metals not displace hydrogen from dilute acids?

Non-metals do not displace hydrogen from dilute acids because they are less reactive than metals. Signup and view all the answers