Describe how the Dalton model of an atom has changed over time because of the discovery of subatomic particles
Describe how the Dalton model of an atom has changed over time because of the discovery of subatomic particles
Calculate the numbers of protons, neutrons and electrons in atoms given the atomic number and mass number
Explain how the existence of isotopes results in relative atomic masses of some elements not being whole numbers
Calculate the relative atomic mass of an element from the relative masses and abundances of its isotopes
Describe the structure of an atom as a nucleus containing protons and neutrons, surrounded by electrons in shells
Recall the relative charge and relative mass of:
a) a proton b) a neutron c) an electron
Explain why atoms contain equal numbers of protons and electrons
Describe the nucleus of an atom as very small compared to the overall size of the atom
Recall that most of the mass of an atom is concentrated in the nucleus
Recall the meaning of the term mass number of an atom
Describe atoms of a given element as having the same number of protons in the nucleus and that this number is unique to that element
Describe isotopes as different atoms of the same element containing the same number of protons but different numbers of neutrons in their nuclei