SCIENCE 5 - MATTER

Ash is a new substance formed when ______.

• pyrite comes into contact with acid.

• food is digested.

• food is digested.

• wood is burned.

Tags

NGSS.5-PS1-4

Why are metals very useful?

• They can be broken

• They can be thrown easily

• They can be decomposed easily

• They can be bent without breaking

Which of the following is NOT a phase change?

• Condensation

• Corrosion

• Deposition

• Evaporation

Gold can be shaped into rings? Property does the gold have?

• Brittleness

• Elasticity

• Hardness

• Malleability

Steel is a strong material used in buildings. Why?

• Steel is elastic

• Steel is flexible

• Steel is breakable

• Steel is hard

Some moth balls were placed inside a cabinet . After a week, what phase change took place in this situation?

• Condensation

• Freezing

• Melting

• Sublimation

What evidence shows a chemical change?

• Formation of precipitate

• Formation of gas or smoke

• Formation of a new substances

• All of the above

Tags

NGSS.5-PS1-4

Evaporation takes place when a _______ changes into a ______.

• Solid, Liquid

• Liquid. Gas

• Solid, Gas

• Gas, Liquid

Which among the following is the harmful effect of burning fuel in the atmosphere?

• It increases oxygen in the air

• It makes the air pure

• It reduces carbon dioxide in the air

• It releases harmful chemicals into the air

Which of the following should be done in disposing rotten vegetables and fruit peeling?

• Throw them away anywhere

• Burn them

• Put them in a compost pit

• Collect them and sell to the junk shop