2d-Reactivity series

Question 1

Question: What is the reactivity series?

Answer 1

Answer: The reactivity series is a list of metals arranged in order of their reactivity, from the most reactive to the least reactive.

Question 2

Question: What is the order of the reactivity series?

Answer 2

Answer: Potassium > Sodium > Calcium > Magnesium > Aluminium > Zinc > Iron > Copper > Silver > Gold

Question 3

Question: How do metals react with water?

Potassium, sodium, calcium

Answer 3

Answer:

Potassium, Sodium, Calcium: React vigorously with water to produce hydrogen gas and metal hydroxides.

Question 4

Question: How do metals react with water?
Magnesium:

Answer 4

Reacts slowly with cold water but reacts with steam.

Question 5

Question: How do metals react with water?
Zinc, Iron:

Answer 5

React with steam, not cold water.

Question 6

Question: How do metals react with water?
Copper, Silver, Gold:

Answer 6

No reaction with water.

Question 7

Question: How do metals react with dilute acids?Answer:

Potassium, Sodium, Calcium:

Answer 7

React violently with dilute acids.

Question 8

Question: How do metals react with dilute acids?Answer:
Magnesium, Zinc, Iron:

Answer 8

React to produce hydrogen gas and a salt.

Question 9

Question: How do metals react with dilute acids?Answer:

Copper, Silver, Gold:

Answer 9

Do not react with dilute acids.

Question 10

What is a displacement reaction?

Answer 10

Answer: A more reactive metal displaces a less reactive metal from its compound. Example:

Zinc + Copper sulfate → Zinc sulfate + Copper

Question 11

How does the position of a metal in the reactivity series affect its extraction?

Answer 11

Answer:

Highly reactive metals (e.g., Potassium, Sodium) are extracted by electrolysis.

Less reactive metals (e.g., Iron, Copper) are extracted by reduction using carbon.

Question 12

Question: Why is carbon used to extract metals?

Answer 12

Answer: Carbon is more reactive than some metals, so it can remove oxygen from metal oxides.

Question 13

Question: What is the reaction between iron and copper sulfate, and what does it demonstrate?

Answer 13

Answer:

Iron + Copper sulfate → Iron sulfate + Copper

This demonstrates that iron is more reactive than copper.

Question 14

Practical: Investigating the Reactivity of Metals

Method:

Answer 14

Place small pieces of different metals in separate test tubes with dilute hydrochloric acid.

Observe the rate of hydrogen gas production.

Question 15

Practical: Investigating the Reactivity of Metals

Results:

Answer 15

Faster bubbling indicates higher reactivity.

Conclusion:

The order of reactivity is determined by the speed and intensity of the reaction.