what is physical change and chemical change
Answers
Answer:
Physical change
Explanation:
no change occurs, only the shape and size of the object change
no new things are formed
Chemical change
change occurs
new things are formed
Answer:
Physical change:
The type of change in which the physical properties of a material change. It can be changed in shape, state of matter, color, density, size, odor, solubility, etc. During this change, only the physical traits of the substances are changed. The chemical composition or its internal properties are not affected by these changes. The atoms are reorganized but the composition remains unchanged. The physical changes can be seen easily.
Few examples of physical changes are:
Dissolving sugar in water, Sublimation of dry ice, crushing a paper, Melting of wax, Boiling of water, Melting of ice, etc.
Chemical change:
A chemical change is a change of materials into another, new materials with different properties, and one or more than one new substance are formed.
EX:
Burning of paper and log of wood
Digestion of food
Boiling an egg
Chemical battery usage
Electroplating a metal
Baking a cake
Milk going sour
Various metabolic reactions that take place in the cells
Rotting of fruits
Decomposition of waste
The explosion of fireworks
The reaction between salts and acids.
Rusting of iron
Lightening a matchstick
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Explanation: