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

Question 1 of 23

2. How many electrons in a magnesium atom?

Question 2 of 23

3. Explain why bromine is less reactive than chlorine

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?

Question 4 of 23

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

Question 5 of 23

6. State the most reactive element in group 7

Question 6 of 23

7. What is the chemical name of rust?

Question 7 of 23

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

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?

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?

Question 10 of 23

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

Question 11 of 23

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

Question 12 of 23

13. How are elements arranged in the periodic table?

Question 13 of 23

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

Question 14 of 23

15. Explain how galvanising prevents rusting

Question 15 of 23

16. What are the elements in group 7 called?

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

Question 17 of 23

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

Question 18 of 23

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

Question 19 of 23

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

Question 20 of 23

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

Question 21 of 23

22.

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

Question 22 of 23

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

Question 23 of 23