Reaction of Metals with Oxygen

What is the atomic number of potassium

• 1

• 11

• 19

• 40

Which is the lightest alkali metal?

• Aluminium
• Hydrogen
• Lithium
• Potassium

Which of the following is not metal?

• sodium

• magnesium

• aluminium

• neon

which two of these statements are correct?

(1) most metals are good conductor of heat

(2) most metals are poor conductor of heat

(3) most metals are good conductor of electricity

(4) most metals are poor conductor of electricity

• 1 and 3

• 2 and 3

• 1 and 4

• 2 and 4

Another useful property of metals is that they are ductile. What does this mean?

• The conduct heat well
• They can be bent into shape
• They have high melting points
• They can be stretched into wires

Where in the diagram of the Periodic Table will you find the most reactive metals?

• 1

• 2

• 3

• 4

Which metal is the most reactive out of: copper, magnesium, zinc and iron?

• copper
• magnesium
• zinc
• iron

Which of the following is arranged according to increasing reactivity?

• magnesium, iron, sodium

• sodium, iron, magnesium

• iron, magnesium, sodium

Another term for burning is

• Fire triangle
• Magnesium oxide
• Combustion
• Bustion

The rusting of iron is an example of

• a reduction reaction.
• an oxidation reaction.
• a reaction of iron with water.
• a reaction that dissolves iron.