1. Explain why methane gas, CH₄, is a gas at room temperature

Question 1 of 16

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

Question 2 of 16

3. 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 3 of 16

4. On the Periodic Table what is the meaning of the word Period?

Question 4 of 16

5. In the dot and cross diagram of the outer electrons showing the covalent bonding in a molecule of nitrogen (N₂), how many electrons should be shown in areas 1, 2 and 3?

Question 5 of 16

6. What is the atomic number of a chlorine atom?

Question 6 of 16

7. What is meant by the term atom?

Question 7 of 16

8. Describe the test for carbon dioxide gas

Question 8 of 16

9. Explain how the atoms are held together in a hydrogen bromide molecule

Question 9 of 16

10. Do larger molecules have higher or lower boiling points than smaller molecules?

Question 10 of 16

11. Why do elements in the same group of the periodic table have similar chemical properties?

Question 11 of 16

12. What colour is anhydrous copper (II) sulfate?

Question 12 of 16

13. Describe the formation of a covalent bond

Question 13 of 16

14. Which particle(s) in an atom has a positive charge?

Question 14 of 16

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

Question 15 of 16

16.

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

Question 16 of 16