YEAR 5 SCIENCE CHAP 8

What is the state of water at room temperature?

• Gas

• Liquid

• Solid

• Metal

Answer explanation

Water is liquid at room temperature

What are the three states of matter?

• Solid, Molecules, Gas

• Atoms, Molecules, Gas

• Solid, Liquid, Atoms

• Solid, Liquids, Gas

Answer explanation

Matter exists in three states, solid, liquid and gas

Liquid takes the shape of the container and has fixed mass

• True
• False

Gas

• have fixed shape, fixed mass and fixed volume

• have its own shape and fixed mass

• have the ability to occupy space and fixed mass

• not have fixed volume

Water can exist in three states, solid, liquid and gas

• True
• False

A process where the solid state of water changes into liquid state of water and heat is absorbed

• Melting

• Boiling

• Freezing

• Condensation

How rain falls to Earth?

• From the gas of the cloud

• From the accumulation of tiny water droplets in cloud

• From the oxygen at sky

• From the river

What is the importance of raining?

• To increase the Earth's temperature

• To cool down the Earth

• To maintain the water cycle of nature

• To get heatstroke

Why the wet floor that have been mopped dry after 20 minutes?

• The floor absorbs the water

• The water is condensed

• The water evaporates into vapor

• The mop is not wet

What is the change of states of the matter during melting process?

• Liquid to Gas

• Gas to Solid

• Solid to Liquid

• Liquid to Solid

Answer explanation

The solid matter absorbs heat to melt and turn into liquid