Physical and Chemical Change

Identify the change shown in the picture.

• Irreversible physical change

• Irreversible chemical change

• reversible physical change

• reversible chemical change

Tags

NGSS.MS-PS1-2

Which of the following is a example of physical change ?

• burning of wood

• photosynthesis

• melting of ice-cream

• ripening of fruit

Tags

NGSS.MS-PS1-4

When CO₂ is passed through lime water, it turns milky due to the formation of:

• CaCl2H4O2

• CaCO3

• Ca(OH)₂

• CO₂

Identify which among the following is not a Physical change:

• Tearing of paper

• Melting of candle

• Churning of Milk

• Printing of paper

melting ice cream

• physical change
• chemical change

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

glass breaking

• physical change
• chemical change

Tags

NGSS.MS-PS1-2

a rusting bicycle

• physical change
• chemical change

Tags

NGSS.MS-PS1-2

corroding metal

• physical change
• chemical change

Tags

NGSS.MS-PS1-2

Iron Pillar near the Qutub Minar in Delhi is famous for the following facts. Which of these facts is responsible for its long stability?

• It is more than 7m high

• It weights about 6000 kg

• It was built more than 1600 years ago

• It has not rusted even after such a long period of time

What is a method to prevent rust?

• Crystallization

• Galvanization

• Sedimentation

• Paint it with grease

• Neutralization