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

1. In the dot and cross diagram of the outer electrons showing the covalent bonding of carbon dioxide (CO₂), how many electrons should be shown in areas 1, 2, 3 and 4?

Question 1 of 10

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

Question 2 of 10

3. How many electrons in a phosphide ion?

Question 3 of 10

4. What is the formula for copper (II) fluoride

Question 4 of 10

5. The addition of water to anhydrous copper sulfate can be used to test for the presence of water. The reaction is reversible. What is the word equation? Describe the colour change.

Question 5 of 10

6. State the electron configuration of the fluoride ion

Question 6 of 10

7. What is the atomic number of an oxygen atom?

Question 7 of 10

8. When testing for halide or sulfate ions, why is acid added added first?

Question 8 of 10

9. State the conditions for the reaction of methane with bromine to form bromomethane

Question 9 of 10

10. What is an alkali compared to a base?

Question 10 of 10


 

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