Physical and Chemical changes

Identify the change shown in the picture.

• Irreversible physical change

• Irreversible chemical change

• reversible physical change

• reversible chemical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following is a example of physical change ?

• burning of wood

• photosynthesis

• melting of ice-cream

• ripening of fruit

What does the picture represent ?

• physical change

• chemical change

Tags

NGSS.MS-PS1-2

Observe the picture and choose the correct option.

• Irreversible physical change

• Reversible physical change

Choose the picture that shows chemical change.

• 
• 
• 
• 

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which one is not the characteristics of a physical change ?

• They are changes in the physical properties of substance.

• They are often irreversible

• Rearrangement of molecules take place

• No new substances are formed

Haber's process is an example of _____________

• Irreversible chemical change

• Reversible chemical change

In physical change , the substance formed has different properties than the original substance.

• True

• False

A chemical change may involve

• Evolution of gas

• Change in temperature

• Change in colour

• All of the above

Tags

NGSS.MS-PS1-2

When a candle burns, both physical and chemical changes occurs.

• True

• False

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5