physical and chemical change

Formation of cloud is ____________ change

• Physical

• Chemical

• None of these

Which of the following Does not indicate a chemical change/reaction is occurring?

• Color Change

• Production of sound

• Formation of gas/bubbles

• change in size

Rust on an iron bar is an example of chemical change.

• True

• False

Name the metal which is used for galvanization?

• chromium

• Copper

• Zinc

• Aluminum

Name the gas which turn lime water into milky

• Hydrogen

• Nitrogen

• Oxygen

• Carbon dioxide

Which is an example of a chemical change?

• baking a cake

• freezing water

• crushing a can

• Crystallization

Name the substances which are mixed with iron to make stainless steel.

• Carbon, Chromium, Zinc

• Carbon, Chromium, Nickel

• Tin,Nickel,Silver

• Copper,gold,silver

Which of the following changes is not a physical change?

• Tearing of paper

• sharpening a pencil

• spoiled milk

• Drying of clothes

Burning of wood is____________ change

• Chemical

• Physical

• none of the above

Is hammering wood to build a treehouse a physical or chemical change?

• physical change

• chemical change