7Class - Science - Changes around US Test 5

LPG in kitchen is liquid. 1. When it comes out it changes into gas. 2. then it burns.

• Only statement 1 is Chemical change
• Only statement 2 is Chemical change
• Both statements are Chemical changes
• Both statements are physical changes

In which type of change new substances are formed?

• Physical change
• Chemical change
• Physical and chemical
• Neither physical nor chemical

How are the crystals of pure substances formed?

• Chromatography
• Peptisation
• Crystallisation
• Chromatography and Peptisation

Physical Change

• Burning of coal
• Ripening of Mango
• Respiration
• Boiling of egg

Physical Change

• Burning of coal
• Ripening of Mango
• Respiration
• Breaking glass

Physical Change

• Burning of coal
• Ripening of Mango
• Respiration
• Making salt solution

Physical Change

• Burning of coal
• Ripening of Mango
• Respiration
• Evaporation of water

Chemical Change

• Boiling of egg
• Breaking glass
• Respiration
• Making salt solution

Chemical Change

• Boiling of egg
• Breaking glass
• Formation of manure from leaves
• Making salt solution

Chemical Change

• Boiling of egg
• Breaking glass
• Burning of magnesium in air
• Making salt solution