This quiz pulls questions at random from the entire Double-only question-bank

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

Question 1 of 10

2. What gas makes up around 1% of Earth's atomosphere?

Question 2 of 10

3. What 2 things are added to a solution to test for chloride ions? What is observed if they are present?

Question 3 of 10

4. What colour flames to sulfur, carbon and magnesium produce when they burn in air?

Question 4 of 10

5. Suggest how the reactivity of fluorine compares to chlorine

Question 5 of 10

6. Give two reasons why addition polymers are hard to dispose of

Question 6 of 10

7. State 3 properties that makes aluminium suitable for power cables

Question 7 of 10

8. Calculate the relative formula mass(Mr) of cobalt chloride crystals (CoCl₂.6H₂O)

Question 8 of 10

9. In a chemical reaction, the overall molar enthalpy is +87 kJ/mol. Is this reaction exothermic or endothermic?

Question 9 of 10

10. If nitric acid (HNO₃) produces H⁺ ions, what is formula for the other ion?

Question 10 of 10