Carbon is carbon whether its nucleus carries six neutrons or eight. Change the neutron count and you have a heavier version of the same element, chemically identical but a different isotope.
Isotopes are atoms of the same element, so they have the same proton number, but they have different numbers of neutrons and so different nucleon numbers. Isotopes of an element are chemically identical.
Isotopes are atoms of the same element with the same proton number but different numbers of neutrons, and so different nucleon numbers.
Isotopes of an element behave the same chemically, for example carbon-12 and carbon-14.
Keep the protons fixed and change the neutrons to move between isotopes of the same element.
Four quick checks. Each correct answer earns XP and lights this skill on your star map.
Isotopes of an element have the same number of...
Isotopes of an element differ in their number of...
Isotopes of the same element have the same...
Chemically, isotopes of an element are...
The proton number is fixed, so the element is the same; only the neutrons differ.
Isotopes have the same number of protons, which is why they are the same element. It is the number of neutrons, not the protons, that differs between isotopes.
Unlocks once the four checks above are done. Worth more XP, written in the style of Paper 2.
Two atoms have the same proton number but different nucleon numbers. They are...
Carbon-12 and carbon-14 differ in their number of...
Which property is the same for all isotopes of an element?
Isotopes are mapped. Keep the chain going.