Question

what is chemistry? hi friends ❤️.what is velocity?​

Answer 1

Answer:

The branch of science concerned with the substances of which matter is composed, the investigation of their properties and reactions, and the use of such reactions to form new substances.

Explanation:

The velocity of an object is the rate of change of its position with respect to a frame of reference, and is a function of time.

Answer 2

Answer:

1) Chemistry is the branch of science that deals with the study of the composition and the physical and chemical properties of various forms of matter.

2) Velocity is a measure of how fast something moves in a particular direction or The velocity of an object is the rate of change of its position with respect to a frame of reference, and is a function of time. ,