Ch11 atomic nature of matter

Compared to the mass of hydrogen atom, the mass of an oxygen atom is

16 times as great

What is the molecular mass of a water molecule?

18 amu

Anatomic mass unit is 1/12 the mass of

A carbon atom

A positron orbiting in antiproton would make up an atom of

Anti hydrogen

If a pair of helium nuclei are fused together at the result is

Beryllium

If two protons are removed from an oxygen nucleus, the result is

Carbon

If one neutron is added to a helium nucleus, the result is

Helium

Which has the greatest number of protons in its nucleus

Lead

If two protons are added to an oxygen nucleolus, the result is

Neon

Which of these atoms has the greatest amount of electrical charges in its nucleus

Uranium

Which of these atoms has the most mass?

Uranium

Which of the following is not a compound

air

The volume of matter comes mostly from its

electrons

When carbon and oxygen atoms combine, energy is

given off by the reaction

In an electrically neutral atom the number of protons in the nucleus is equal to the number of

orbital electrons

The weight of matter comes mostly from its

protons

What makes an element distinct?

protons

Brownian motion has to do with the

random motions of atoms and molecules