metals and non metals

Which metal is the most reactive to water and oxygen?

• Phosphorus

• Sodium

• Sulphur

• Silicon

Which nonmetal is reactive to air?

• Phosphorus

• Sodium

What does the pop sound indicate? The pop sound indicate -----------------

• Magnesium

• Hydrogen

• Oxygen

• Helium

copper sulphate + zinc →→ zinc sulphate + copper

• True

• False

iron sulphate + copper turnings→→no change. is it true or false?

• True

• False

nonmetal used in crackers ? [choose any three]

• Carbon

• Sulphur

• Phosphorus

• Oxygen

non metal in liquid state?

• Mercury

• Bromine

• Iodine

• Water

which gas makes the balloon float up when the balloon is filled? [ hint- the gas is non metal]

• Helium

• Hydrogen

Metal react with oxygen to produce _________oxides and non-metal react with oxygen to produce_________oxides.

_________element is used for making pencil lead.