PHYSICAL AND CHEMICAL CHANGES

Front

Which of the following is an example of physical change?

• burning of wood
• photosynthesis
• melting of ice-cream
• ripening of fruit

Back

melting of ice-cream

Front

What does the picture represent?

Back

chemical change

Front

Observe the picture and determine the type of physical change:

Irreversible physical change

,

Reversible physical change

Back

Irreversible physical change

Front

Choose the picture that shows chemical change.

Back

Front

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

Back

False

Front

What may a chemical change involve?

• Evolution of gas
• Change in temperature
• Change in colour
• All of the above

Back

All of the above

Front

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

Back

True

Front

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

• a bike rusting
• toast burning
• butter melting
• food spoiling

Back

butter melting

Front

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

• a penny tarnishing
• a mirror being scratched
• hair being cut
• water being boiled

Back

a penny tarnishing

Front

Which of the following examples provides evidence of a PHYSICAL change?

• Wood is burned and releases ash and smoke
• Iron rusts over time
• When mixed, baking soda and vinegar form gas bubbles
• Boiling water bubbles when heated

Back

Boiling water bubbles when heated