Which statement is a scientific theory?
a)the acceleration of an object increases as the force on an object increases.
b)all matter is made up of particles, called atoms, that are constantly moving.
c)a ray of light reflects off of a mirror at the same angle that it hits the mirror.
d)the total amount of mass present does not change during a chemical reaction.

Answer;

B)All matter is made up of particles, called atoms, that are constantly moving.

Explanation;

-A hypothesis is a limited explanation of a phenomenon; a scientific theory is an in-depth explanation of the observed phenomenon.

-A scientific theory is a series of statements about the causal elements for observed phenomena. A critical component of a scientific theory is that it provides explanations and predictions that can be tested.

-"All matter is made up of particles, called atoms, that are constantly moving" is a scientific theory providing explanation on the composition of matter.