1 In a displacement reaction, chlorine can displace: A Fluorine from its salt B Bromine from its salt C Iodine from its salt only D All halogens from their salts
2 When a flame test is performed on a compound containing lithium, what colour is observed? A Crimson red B Yellow C Lilac D Blue-green
3 Which of the following is a property of non-metals? A They are malleable and ductile B They are good conductors of electricity C They are brittle and poor conductors D They have a shiny surface
4 Group 17 elements exist as diatomic molecules. Which of the following is an example? A Cl2 B NaCl C HCl D H2O
5 Noble gases are chemically inert because they have: A One electron in the outermost shell B A stable electronic configuration C Unpaired electrons D High reactivity
6 The reaction of a Group 1 metal with a halogen produces: A A metal oxide B A metal halide C A metal hydroxide D Hydrogen gas
7 Which of the following elements is a noble gas with a stable electronic structure and is used in neon signs? A Sodium B Chlorine C Neon D Iron
8 Which property is typical of transition elements? A They form colourless compounds B They often form coloured compounds C They have low melting points D They are non-conductors
9 Which noble gas is used in balloons because it is less dense than air? A Neon B Argon C Helium D Radon
10 Which of the following is a physical property of non-metals? A They are good conductors of heat B They are malleable and ductile C They are usually poor conductors of electricity D They have a shiny surface
11 What is observed when sodium reacts with water? A A gas that extinguishes a burning splint with a pop sound is produced. B A gas that turns limewater milky is produced. C A gas that relights a glowing splint is produced. D A gas that turns damp litmus paper blue is produced.
12 What is the colour of bromine at room temperature? A Pale yellow-green B Red-brown C Purple-black D Colourless
14 Why are Group 1 elements stored in oil? A To prevent them from reacting with air and moisture B To make them shiny C To increase their reactivity D To change their colour
15 Which Group 1 element reacts most vigorously with oxygen? A Lithium B Sodium C Potassium D Hydrogen
16 Which noble gas is used in advertising signs to produce a red glow? A Helium B Neon C Argon D Krypton
17 Which property explains why Group 1 metals become more reactive as we move down the group? A The outermost electron is lost more easily as atomic size increases B The number of protons decreases down the group C The atoms gain electrons more easily down the group D The melting point increases down the group
18 Which halogen is more reactive: chlorine or bromine? A Chlorine B Bromine C Both are equally reactive D Neither is reactive
19 Which property makes transition elements useful as catalysts? A They have low melting points B They can change oxidation state easily C They are poor conductors D They are soft
20 Which halogen is more reactive and can displace bromine from a solution of potassium bromide? A Iodine B Chlorine C Astatine D Fluorine
22 What is the colour trend of halogens as you go down Group 17? A Colour becomes lighter B Colour becomes darker C Colour remains the same D Colour changes randomly
23 Which transition element is commonly used as a catalyst in the contact process for making sulfuric acid? A Iron B Vanadium C Copper D Zinc
24 Which property is shown by non-metals? A High electrical conductivity B Malleability C Brittleness D Sonorous
25 Which of the following is a use of transition metals? A As fertilizers B As catalysts in industrial processes C As fuels D As inert gases in bulbs