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