1. How many protons in a potassium atom?

Question 1 of 16

2. What is meant by the term molecule?

Question 2 of 16

3. How many electrons in an argon atom?

Question 3 of 16

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

Question 4 of 16

5. In the dot and cross diagram of the outer electrons showing the covalent bonding in a molecule of ethane (C₂H₆), how many electrons should be shown in areas 1, 2, 3, 4, 5, 6 and 7?

Question 5 of 16

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

Question 6 of 16

7. Describe the formation of a covalent bond

Question 7 of 16

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

Question 8 of 16

9. What are the two parts of an atom?

Question 9 of 16

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

Question 10 of 16

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

Question 11 of 16

12. 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 12 of 16

13. Explain why nitrogen gas, N₂, is a gas at room temperature

Question 13 of 16

14. Describe the chemical test for water

Question 14 of 16

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

Question 15 of 16

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

Question 16 of 16


 

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