Chemistry

Question 1

1Down Group 17, reactivity

Easy

A. becomes zero B. stays the same C. increases D. decreases

Question 2

2The noble gas used in advertising signs because it glows red is

Easy

A. helium B. xenon C. neon D. argon

Question 3

3The oxides of non-metals such as sulphur are usually

Easy

A. basic B. metallic C. acidic D. neutral salts

Question 4

4Electronegativity across a period from left to right

Easy

A. becomes zero B. decreases C. increases D. stays the same

Question 5

5Oxides of metals are generally

Easy

A. acidic B. explosive C. neutral D. basic

Question 6

6Down Group 2, the solubility of the hydroxides

Hard

A. becomes zero B. decreases C. increases D. stays the same

Question 7

7Which oxide of a Period 3 element is amphoteric?

Medium

A. P₄O₁₀ B. SO₂ C. Al₂O₃ D. Na₂O

Question 8

8Aluminium oxide is amphoteric, meaning it

Hard

A. reacts with both acids and bases B. reacts only with acids C. does not react D. is a gas

Question 9

9Across Period 3, the oxides change from

Hard

A. neutral throughout B. basic throughout C. acidic to basic D. basic to amphoteric to acidic

Question 10

10Down Group 1, reactivity

Easy

A. first rises then falls B. decreases C. stays the same D. increases