Which scenarios are examples of physical changes? check all that apply.

wood is burned in a campfire and is turned into ash and smoke.
silicon is cut into tiny pieces for computer chips.
lead is melted to form pellets.
liquid water freezes to form ice.
yeast turns sugar into energy, water, and carbon dioxide gas.

Explanation:

Physical change is a change that does not affect the chemical composition of a substance but it changes the physical appearance like size or shape of the substance.

For example, crushing a can, melting of ice, breaking a glass etc represents the physical change.

Scenarios which represent examples of physical changes are as follows.

• Synthetic fibres are nonbiodegradable .

• Synthetic fibres melt and burn easily.