Activity2: Metal...Metal How reactive are you?

How does iron react with muriatic acid, according to the table?

• Reacts slowly to form rust, with the formation of hydrogen gas bubbles.

• Does not react at all.

• Reacts violently, with the formation of bubbles.

What is the observed reaction when copper is exposed to muriatic acid?

• Reacts vigorously, forming bubbles.

• No reaction.

• Reacts slowly forming bubbles

Describe the reaction of aluminum with muriatic acid, as indicated in the table.

• No observable reaction.

• Reacts violently, tarnishes, and produces hydrogen gas bubbles.

• Slow reaction, forming a few bubbles.

How does zinc behave when it comes into contact with muriatic acid?

• It remains unchanged, with no reaction.

• It reacts vigorously, tarnishes, and produces bubbles of hydrogen gas.

• It slowly dissolves, forming rust.

Which of these metals - Fe (Iron), Cu (Copper), Al (Aluminum), and Zn (Zinc) - reacts with muriatic acid?

• Only Fe (Iron)

• Fe, Al, and Zn (Iron, Aluminum, and Zinc)

• Only Cu (Copper)

What is the position (with respect to hydrogen) in the activity series of the metals that reacted or did not react with muriatic acid (HCl) in the activity?

• All the metals are above hydrogen in the activity series.

• Metals that reacted are above hydrogen; the metal that didn't react is below hydrogen.

• The activity series is unrelated to the reaction with muriatic acid.

Potassium, sodium, and lithium are metals belonging to Group 1. In this group, how does reactivity vary from top to bottom in the periodic table?

• Reactivity increases from top to bottom.

• Reactivity is unpredictable and changes randomly.

• Reactivity decreases from top to bottom.

Does the relative reactivity of calcium and magnesium follow this trend? (Referring to the trend of reactivity in Group 1)

• No, calcium and magnesium have the opposite trend.

• The trend only applies to Group 1 elements, not Group 2.

• Yes, Group 2 metals follow the same trend as Group 1 metals in terms of reactivity.

Sodium, magnesium, and aluminum belong to Period 3 (Corrected from Period 2). Does reactivity increase or decrease from left to right among elements in a period?

• Reactivity changes unpredictably across a period.

• Reactivity decreases from left to right.

• Reactivity increases from left to right.

Which will be more reactive in the following pairs of metal in every case?

A. Mg (Magnesium) or Na (Sodium) with HCl

• Mg (Magnesium)

• Na (Sodium)

• They are equally reactive.