Atoms

Question 1

Atomic Number

Answer 1

the number of protons in the nucleus of an atom

Question 2

Bohr Model

Answer 2

describes an atom as a small dense nucleus with electrons orbiting around the
nucleus. This model explains different periodic properties of atoms

Question 3

Electron

Answer 3

a negatively charged subatomic particle which orbits the nucleus at various energy
levels the relative mass of an electron is 1/1836

Question 4

ion

Answer 4

charged atom or molecule

Question 5

Isotope

Answer 5

atoms of the same element with the same number of protons and electrons but
different numbers of neutrons isotopes of an element have different masses

Question 6

mass number

Answer 6

the total number of protons and neutrons in the nucleus of an atom

Question 7

mass spectrometry

Answer 7

an instrument which gives accurate information about relative isotopic
mass and the relative abundance of isotopes

Question 8

neutron

Answer 8

a neutral subatomic particle found in the nucleus of an atom the relative mass of
a neutron is 1