Which of these are chemical changes in matter? check all that apply. mixing lemonade powder in water bleaching your hair mowing the lawn lighting a match letting fruit rot?

Answer is: bleaching your hair, lighting a match letting fruit rot.

bleaching your hair, lighting a match letting fruit rot are chemical changes (chemical reactions), because new substances are formed, the atoms are rearranged and the reaction is followed by an energy change.

Physical property can be observed and measured without any changes in molecular composition.

The same substance is present before and after the psysical change (mowing the lawn), just with different form or state of matter.

Making mixture (mixing lemonade powder in water) is physical change (physical change is reversible).

bleaching your hair, lighting a match, and letting fruit rot.

Explanation:

convalent bond :

is a chemical bond formed by the sharing of electron between 2 atoms.

it is the direct chemical bond between 2 atoms.

in bond formation atoms are involved here.

electrovalent bond:

is a chemical bond defined as electroststic attraction between 2 atoms.

it is the electrostatic attraction between 2 atoms.

in bond formation, ions are involved here.

hope it

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