Reactivity of Calcium Metal

The video explains how calcium metal reacts quickly with oxygen in the air when heated, highlighting its flammable nature.

What does calcium metal do when exposed to oxygen?

• It reacts rapidly.

• It melts.

• It evaporates.

• It becomes inert.

Under what condition does calcium metal react with oxygen?

• When it is cooled.

• When it is heated.

• When it is mixed with water.

• When it is in a vacuum.

What is a property of calcium metal when it is heated?

• It turns into a gas.

• It becomes flammable.

• It becomes non-reactive.

• It loses its color.

Which of the following is true about calcium metal?

• It does not react with air.

• It is non-flammable.

• It reacts slowly with oxygen.

• It is flammable.

What happens to calcium metal in the presence of air when heated?

• It turns into a liquid.

• It reacts rapidly and is flammable.

• It remains unchanged.

• It becomes less reactive.