Science form 1 - chapter 5 - 7

WHAT IS A MATTER?

• Substance that has shape and weight

• Substance that has mass and occupies space

• Substance that has color and shape

• Substance that has mass and did not occupies space

Activity shown in the picture is to prove

• Balloon can be blown and burst

• Red balloon is heavier than grey balloon

• Air has mass and occupies space

• Air can escape when balloon burst

Ice melting is an example of a

• physical change
• chemical change
• physical property
• chemical property

Which one is chemical properties?

• density

• boiling

• decomposition

• freezing

Particles vibrate in fixed position.

• Solid

• Liquid

• Gas

Higher density equal to

• less dense

• denser

• more dense

• less denser

What is diffusion?

• Process in which the particles of substances diffuse from high concentration area to a low concentration area

• Process in which the particles of substances diffuse from low concentration area to a high concentration area

The clothes hung on the clothesline is undergoing ______.

• Boiling

• Melting

• Evaporation

• Condensation

During condensation,

• heat is absorbed

• heat is released

• heat is trapped

• heat is gone

Mothball/ naphthalene will undergo the process of _________.

• boiling

• sublimation

• melting

• freezing