Chemical Matter

What new substance do we get if we mix the vinegar with baking soda?

• Oxygen

• Carbon dioxide

• Helium

• Argon

Which of the following is irreversible change?

• Melting of ice cubes

• Formation of frost

• Evaporation of water

• Burning of paper

__________ change does not create a new substance.

• Biological

• Physical

• Chemical

• Technological

Which of the following is the new substance being formed when we burn the wood?

• Water vapor

• Carbon dioxide

• Ash

• All of the above

Which of the following is an example of a chemical change?

• Tearing a paper

• Cutting a wood

• Breaking a glass

• Baking a bread

Which of the following does not belong to the group?

• Freezing

• Evaporation

• Burning

• Condensation

_________ is the process when the gas turns directly into a solid.

• Sublimation

• Deposition

• Condensation

• Melting

____________ is the process when solid turns into liquid.

___________ is the process when liquid turns to solid.

Which of the following is an example of sublimation?

• Ice cube turns into a liquid

• Water turns into a steam

• Dry ice turns into a gas or smoke

• Water vapor turns into a frost