Chapter 6.1 - 'Atoms, Isotopes And Radioisotopes' Flashcards
State the collective name for protons and neutrons.
Nucleons
State what the atomic number represents.
State the symbol.
The amount of protons.
Z
State what the mass number represents.
State the symbol.
Total number of nucleons.
A
State what the number of protons determines.
The element.
State what an electrically neutral atom suggests about the ratio of protons to electrons.
Suggests that for every proton there is a electron.
State what neutron stars are.
Gigantic balls with a radius of ten or more kilometres that are made purely of neutrons.
State what isotopes are.
Isotopes are atoms that have the same number of protons but different numbers of neutrons.
State the amount of stable isotopes in nature.
270
State how an unstable nucleus become stable.
Spontaneously emits a particle to change into a different element or isotope.
State what a radioactive isotope is known as.
Radioisotope
State the central part of the atom and what it consists of.
Nucleus.
Protons and neutrons.
