P AND C PROPERTIES VIB

physical changes are reversible change and chemical changes are irreversible melting an ice is physical change boiling a egg is chemical change

A:1)When a substance changes his form so this is called chemical change like bolling egg and where a physical change is like meting ice and it comes into water form but it also convert into ice by freezing.

FROM HUSSAIN

Physical change: No new substance, reversible (e.g., melting ice).

Chemical change: New substance formed, often irreversible (e.g., burning wood).The 2 examples are

Physical: Ice melting.

Chemical: Wood burning.

chemical change is burning wood and physical change is tearing paper, the clues that help me figure out about chemical and physical change are that chemical change happens when substance react.transitions from one state to another

tooba batool 6B

A1)if any substance is formed it means chemical change and when there is any change in size or looks it means physical change

Example of physical change:-

crushing a can

Example of chemical change:-

boiling an egg

Affan

sakina Abbas

when shape changes so it is physical change

chemical change

digesting food

physical change

melting ice

A chemical change from a chemical reaction, while a physical change is when matter changes forms but not chemical identity. Examples of chemical changes are burning, cooking, rusting, and rotting. Examples of physical changes are boiling, melting, freezing, and shredding.

Dua Ahmed

Ans1) To figure out if a change is

chemical or physical we can see what changes take place. In chemical change, we get a completely new substance and in physical change only height and shape changes.

Ans2) One example of physical change is boiling water and one example of chemical change is mixing baking soda and vinegar.

if a change is physical only its size and shape will change but if it is chemical change a new substance will form.

breaking a glass is example of a physical change.

baking a cake is a example of chemical change

NAME. Shaheryar

Facial. Freezing water

Camical .baking a cake

In a physical change the appearance or form of the matter changes but the kind of matter in the substance does not.

A Chemical Change is a process that transforms one or more substances into one or more new and different substances.

Physical : Melting an ice cube into water

Chemical : Burning wood

Zainab Noman

.chemical changes change a substance into a new material while physical changes only change the substances appearance and shape

chemical change example,baking a cake

physical change example,melting ice

Affan Aamir

Chemical Change forms a new substance and physical change does not include a new substance

Example Chemical change: frying an egg

Example physical change: Crushing a can

the clue of chemical change is that it adds other substance to make a new substance and in physical change it doesn't add new substance to make a new subsatance.

physical change:melting an ice cube

chemical change:baking a cake

The cooking of egg helped me understand the change in chemical reaction.

The mixture of water and salt helped me understand the change in physical reaction

BY: YAHYA ZAHID 6B

Ans 1. if an item changes and turns into a new substance,which can not be reversed is chemical change,while physical changes can be reversed and don't create new substances

Ans 2. Chemical change:

Energy used from bettery

         Physical Change:

Crushing a soda can

 Zubia

Rawah kanwar

When there is a chemical change there is a new substance formed and cannot be reversed

When there is a physical change there is no new substance formed and it can be reversed

Chemical change : baking a cake

Physical change : freezing ice

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.