If new substance is form it is a chemical change if new substance is not form it is a physical change.moosa raza



Example of physical change;
.physical change doesn't notchange like melting ice.

A physical change doesn’t make a new substance and can often be reversed, like melting ice. A chemical change creates new substances and is usually irreversible, like burning wood.

A physical change alters a substance's appearance or state without changing its composition, like when ice melts into water. It’s often reversible.
A chemical change creates new substances and is usually irreversible, like when wood burns to form ash, carbon dioxide, and water vapor.
BY: HASEEB 6 E

A physical change the form of a substance but not its chemical composition (like ice is melting in water).A chemical change creates a new substance with different properties (like burning wood into ash).

ANS1)A chemical change makes a new substance and is hard to reverse. A physical change only changes how something looks or feels.
ANS2): Physical change: Ice melting. Chemical change: Cake baking.
HASSAN AHMED

The clues that show that the change is physical as it does not change the color and does not create a new substance and it shows that it is chemical as it changes its texture and color and create a new substance.
Physical Change Examples: Water boiling,
Chemical Change Example : Rusting.

Physical changes alter the appearance or form of matter, while chemical changes result in the formation of new substances with different properties by M.ZAYAN ANIS

Signs of a chemical change:
.Color change
.Gas production (bubbles)
.Heat or light emission
.Change in state.
.Change in shape or size
.No new substances formed

Physical changes in matter are often reversible: An ice cube can melt into liquid water, and then the liquid water can be frozen back into an ice cube. Chemical changes, on the other hand, are not reversible: A log burned in a fire turns to ashes, but the ashes cannot be changed back into a log.

A physical change only changes how something looks, but it stays the same substance (like ice melting). A chemical change makes a new substance with signs like color change, bubbles, or heat (like bread toasting).
By:Daniyal Malik

What clues help you figure out if a change is chemical or physical?
Give one example of physical change and one example of chemical change.