Which statement describes a change that occurs during a chemical reaction?
A.
Atoms in the original substances are arranged in a different way to make new substances.
B.
Atoms in the original substances are changed into different atoms to make new substances.
C.
The atoms in a substance change their properties so they can become a new substance.
D.
The atoms in a substance start to move faster until they are no longer touching each other.

Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?

Carbon-14 is a radioactive element that undergoes beta decay. which force is responsible for allowing carbon-14 to become stable? electromagnetic gravitational weak nuclear strong nuclear

Who was the first scientist to measure speed as distance over time?