Metal Reactivity & Halogens quiz

1. Predict what colour and state is astatine at room temperature

yellow solid

black solid

yellow liquid

black gas

Question 1 of 23

2. How many electrons in a magnesium atom?

12

13

14

24

Question 2 of 23

3. Explain why bromine is less reactive than chlorine

Both chlorine and bromine react by their nucleus attracting an electron to fill their outer shell. The outer shell of bromine is closer to the nucleus, so the attraction is stronger, making it less reactive.

Both chlorine and bromine react by their nucleus attracting an electron to fill their outer shell. The outer shell of bromine is closer to the nucleus, so the attraction is weaker, making it less reactive.

Both chlorine and bromine react by their nucleus attracting an electron to fill their outer shell. The outer shell of bromine is further from the nucleus, so the attraction is stronger, making it less reactive.

Both chlorine and bromine react by their nucleus attracting an electron to fill their outer shell. The outer shell of bromine is further from the nucleus, so the attraction is weaker, making it less reactive.

Question 3 of 23

4. On the Periodic Table what is the meaning of the word Period? What does that tell us about the electron configuration of the atom?

same number of electron shells

Same number of electrons in the inner shell

Same electronic configuration

same number of electrons in the outer shell

Question 4 of 23

5. 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 2,8,8,1. 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

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 2,1. 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 5 of 23

6. State the most reactive element in group 7

Astatine

Bromine

Chlorine

Fluorine

Question 6 of 23

7. What is the chemical name of rust?

hydrated iron(III) oxide

anhydrous iron(I) oxide

hydrated iron(II) oxide

anhydrous iron(II) oxide

Question 7 of 23

8. If an element doesn't conducts electricity, is it a metal or a non-metal?

Metal

Non-Metal

Either metal or non-metal

Depends on conditions

Question 8 of 23

9. 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?

Potassium would burn with a lilac flame showing it is most reactive. Lithium wouldn\'t burn at all showing it is least reactive

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

Potassium 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 least reactive. Lithium wouldn\'t burn at all showing it is most reactive

Question 9 of 23

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

X

XSO₄

ZSO₄

Z

Question 10 of 23

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

Chlorine. Gains electrons

Bromide. Loses electrons

Bromine. Gains electrons

Bromine. Loses electrons

Question 11 of 23

12. Describe the relative reactivities of the elements in Group 1

Potassium is the most reactive, and it decreases up and down the group from there, e.g LiRb

The reactivity of all the group 1 elements is the same

The reactivity decreases as you go down the group, e.g. Rb

The reactivity increases as you go down the group, e.g. Li

Question 12 of 23

13. How are elements arranged in the periodic table?

in order by size

in order by atomic number

in order by mass number

in no particular order

Question 13 of 23

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

Isotopes have the same number of electrons

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

Isotopes have different masses

Isotopes are radioactive

Question 14 of 23

15. Explain how galvanising prevents rusting

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

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

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

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

Question 15 of 23

16. What are the elements in group 7 called?

Noble gases

Chalcogens

Halogens

Alkali metals

Question 16 of 23

17. 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 but different concentrations of acid. The metals which bubble more are more reactive.

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.

Question 17 of 23

18. Which is more reactive: copper, magnesium, iron or silver?

iron

copper

magnesium

silver

Question 18 of 23

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

Only on the bottom row

At the top right, plus hydrogen

Only in the left hand column

On the left, reaching across the middle

Question 19 of 23

20. Which gas will turn damp red litmus paper blue?

Chlorine

Hydrogen

Ammonia

Carbon dioxide

Question 20 of 23

21. Complete the equation for the reaction by inserting the state symbols: 2Li(....) + 2H₂O(....) → 2LiOH(...) + H₂(....)

2Li(s) + 2H₂O(l) → 2LiOH(s) + H₂(aq)

2Li(s) + 2H₂O(aq) → 2LiOH(aq) + H₂(g)

2Li(s) + 2H₂O(l) → 2LiOH(aq) + H₂(g)

2Li(s) + 2H₂O(aq) → 2LiOH(s) + H₂(g)

Question 21 of 23

22.

Explain, in terms of the arrangement of electrons in its atoms, why neon is very unreactive

Neon is a noble gas

Neon has 8 electrons in the outer shell, so it is full. Therefore it does not easily gain or lose electrons

Neon has the same number of electrons and protons so it is unreactive

Neon has an even number of electrons so it does not need to form bonds

Question 22 of 23

23. Write the word equation to represent the reaction between hydrochloric acid and calcium

hydrochloric acid + calcium → calcium chloride + water

hydrochloric acid + calcium → calcium hydrochloride + water

hydrochloric acid + calcium → calcium chloride + hydrogen

hydrochloric acid + calcium → calcium hydrochloride

Question 23 of 23

Metal Reactivity & Halogens quiz

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