Metal Reactivity & Halogens quiz

1. Identify the species that is oxidised in the following reaction. Explain your answer: 2Br⁻ + Cl₂ → 2Cl⁻ + Br₂

Bromine. Loses electrons

Bromine. Gains electrons

Bromide. Loses electrons

Chlorine. Gains electrons

Question 1 of 23

2. Which is more reactive: sodium, zinc, magnesium or aluminium?

sodium

zinc

magnesium

aluminium

Question 2 of 23

3. Which group of atoms has a full outer shell?

Group 0, the noble gases

Group 2, alkaline earth metals

Group 1, the alkali metals

Group 7, the halogens

Question 3 of 23

4. Write the word equation to represent the reaction between sulfuric acid and magnesium

sulfuric acid + magnesium → magnesium sulfate + water

sulfuric acid + magnesium → magnesium sulfide + water

sulfuric acid + magnesium → magnesium sulfide + hydrogen

sulfuric acid + magnesium → magnesium sulfate + hydrogen

Question 4 of 23

5. Are metal oxides acidic or basic?

Neutral

Depends on conditions

Basic

Acidic

Question 5 of 23

6. Explain how galvanising prevents rusting

The zinc coating protects the iron, preventing it from exposure to oxygen and water

Zinc accepts excess electrons from the iron, preventing it from reacting

Zinc is more reactive than iron. Zinc reacts with water instead of iron

Zinc is more reactive than iron. Zinc reacts with oxygen instead of iron

Question 6 of 23

7. Explain, by referring to the electronic configurations, why fluorine is more reactive than chlorine

Fluorine has the electronic configuration 2,7 and chlorine has 2,8,7. An extra outer electron is gained more easily by chlorine. This is because the outer shell is closer to the nucleus, so an extra electron is attracted more strongly. So fluorine is more reactive than chlorine

Fluorine has the electronic configuration 2,8,7 and chlorine has 2,7. An extra outer electron is gained more easily by fluorine. This is because the outer shell is closer to the nucleus, so an extra electron is attracted more strongly. So fluorine is more reactive than chlorine

Fluorine has the electronic configuration 2,7 and chlorine has 2,8,7. An extra outer electron is gained more easily by fluorine. This is because the outer shell is closer to the nucleus, so an extra electron is attracted more strongly. So fluorine is more reactive than chlorine

Fluorine has the electronic configuration 2,8,7 and chlorine has 2,7. An extra outer electron is gained more easily by chlorine. This is because the outer shell is closer to the nucleus, so an extra electron is attracted more strongly. So fluorine is more reactive than chlorine

Question 7 of 23

8. What colour and state is bromine at room temperature?

Red-brown liquid

Brown gas

Grey solid

Orange liquid

Question 8 of 23

9. In the test of a gas, a glowing splint relights. What is the gas?

Chlorine

Hydrogen

Oxygen

Carbon dioxide

Question 9 of 23

10. Describe the conditions under which iron rusts

carbon dioxide only

oxygen and water

oxygen only

water and carbon dioxide

Question 10 of 23

11. Where are non-metals found on the periodic table?

Only in the left hand column

Only on the bottom row

On the left, reaching across the middle

At the top right, plus hydrogen

Question 11 of 23

12. How are elements arranged in the periodic table?

in no particular order

in order by size

in order by atomic number

in order by mass number

Question 12 of 23

13. State the colour change observed when bromine is added to an aqueous solution of potassium iodide

no change

orange to colourless

Colourless to brown

brown to orange

Question 13 of 23

14. How many electrons in the outer shell of group 4 elements?

4

0

5

3

Question 14 of 23

15. Explain, in terms of electrons, why isotopes have the same chemical properties

Isotopes have different masses

Isotopes are radioactive

Isotopes have the same number of protons but a different number of neutrons

Isotopes have the same number of electrons

Question 15 of 23

16.

If pieces of lithium, potassium and sodium were cut and exposed to air, how could observations of the different reactions indicate the relative reactivity of those 3 metals?

Sodium would oxidise the most quickly, showing it is most reactive. Lithium would oxidise the slowest, showing it is least reactive.

Potassium would burn with a lilac flame showing it is most reactive. Lithium would not burn at all showing it is least reactive

Potassium would burn with a lilac flame showing it is least reactive. Lithium would not burn at all showing it is most reactive

Potassium would oxidise the most quickly, showing it is most reactive. Lithium would oxidise the slowest, showing it is least reactive.

Question 16 of 23

17. Which is less reactive: sodium or potassium?

Sodium

Potassium

Depends on the pressure

Depends on the temperature

Question 17 of 23

18. On the Periodic table what is the meaning of the word Group? What does that tell us about the electron configuration of the atom?

Same electronic configuration

Same number of electrons in the inner shell

Same number of electron shells

same number of electrons in the outer shell

Question 18 of 23

19. Describe how the reaction of hydrochloric acid and various metals could be used to determine the relative reactivity of those metals

Add the various metals to different test tubes containing the same volume and concentration of acid. The metals which bubble more are less reactive.

Add the various metals to different test tubes containing the same volume and concentration of acid. The metals which bubble more are more reactive.

Add the various metals to different test tubes containing the same volume but different concentrations of acid. The metals which bubble more are less reactive.

Add the various metals to different test tubes containing the same volume but different concentrations of acid. The metals which bubble more are more reactive.

Question 19 of 23

20. Predict what colour and state is fluorine at room temperature

yellow gas

yellow solid

green solid

green liquid

Question 20 of 23

21. An experiment investigates which of metals X and Z is more reactive. The result is X + ZSO₄ → XSO₄ + Z. Which metal is more reactive?

Z

XSO₄

ZSO₄

X

Question 21 of 23

22. Explain, by referring to the electronic configurations, why potassium is more reactive than sodium.

Sodium has the electronic configuration 2,8,1 and potassium has 2,1. The outer electron lost from potassium is further from the nucleus therefore the electron is less attracted by the nucleus. So potassium is more reactive than sodium

Sodium has the electronic configuration 2,8,1 and potassium has 2,1. The outer electron lost from potassium is closer to the nucleus therefore the electron is more attracted by the nucleus. So potassium is more reactive than sodium

Sodium has the electronic configuration 2,8,1 and potassium has 2,8,8,1. The outer electron lost from potassium is closer to the nucleus therefore the electron is more attracted by the nucleus. So potassium is more reactive than sodium

Sodium has the electronic configuration 2,8,1 and potassium has 2,8,8,1. The outer electron lost from potassium is further from the nucleus therefore the electron is less attracted by the nucleus. So potassium is more reactive than sodium

Question 22 of 23

23. How should group 1 elements be stored

Under pressure

Under oil

Away from light (UV)

Below 5 ⁰C

Question 23 of 23

Metal Reactivity & Halogens quiz

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