What are Physical and chemical change? write their three characteristics of each.
Answers
Explanation:
The difference between a physical reaction and a chemical reaction is composition. In a chemical reaction, there is a change in the composition of the substances in question; in a physical change there is a difference in the appearance, smell, or simple display of a sample of matter without a change in composition
A physical change involves a change in physical properties. Examples of physical properties include melting, transition to a gas, change of strength, change of durability, changes to crystal form, textural change, shape, size, color, volume and density.
Some signs of a chemical change are a change in color and the formation of bubbles. The five conditions of chemical change: color chage, formation of a precipitate, formation of a gas, odor change, temperature change
Answer:
physical change: A change in which the physical property of a substance change and no new substance are formed is called physical change
characteristice of physical change:
1) the physical property of the substance change during a physical change
2) only a small amount of heat is adsorbed or given off during the change