Question

can anyone help me plzzz


examples for physica and chemical change
Is respiration is physical or chemical change .Explain the reason.​

Answer 1

The some examples of chemical Change R:- •Burning wood

•Iron rusting

•Fireworks

•Baking a cake

•Cooking on egg

•Rotting banana

The some examples of physical change R:-

• Melting an ice cube

• Bolling water

• Mixing sand with water

• Glas is broken

• Ripping of paper

_____________________

Respiration is a chemical change as new substances like carbon dioxide and water are formed. Also there is change in the mass as glucose is oxidised by oxygen and heat is released. This change is permanent. All these factors conclude that respiration is a chemical change.

_____________________

Hopes it helpful for uhh dear ☺️❤️❣️

Answer 2

Respiration is chemical change bcoz we breathe in oxygen but exhale carbon dioxide. As we know that chemical change means when a substance combines with another substance it forms a new product, so respiration is a chemical change as we breathe oxygen and exhale corbon dioxide which is a new product.

Eg of Physical change....

1. tearing of paper.
2. stretching of rubber band.
3. boiling of water.

Eg of chemical change....

1. burning of wood.
2. cooking food.
3. burning of candles.

hope its helpful....

mark as BRAinLIEST....