Revise smart, understand Better

0.000 s

If an atom has 9 protons, 10 neutrons, and 9 electrons, what element is it?

Neon.

Oxygen.

Fluorine.

Sodium.

Two natural phenomena that support the kinetic theory of matter are:

Rainfall and Diffusion.

Diffusion and Brownian motion.

Rainfall and Brownian motion.

Diffusion and Transpiration.

Avogadro's constant (L) represents:

The charge of one electron.

The volume of one mole of any gas at STP.

The number of particles (atoms, molecules, ions) in one mole of a substance.

The mass of one atom of carbon-12.

What is the primary difference between a chemical change and a physical change?

Physical changes involve a change in temperature, chemical changes do not.

Physical changes are reversible, chemical changes are not.

Chemical changes result in new substances, physical changes do not.

Chemical changes involve a change in state, physical changes do not.

__ are atoms of the same element having the same atomic number but different mass numbers, due to different numbers of neutrons.

Atoms.

Isotopy.

Mass number.

Isotopes.