Topic 3 - Geological time Flashcards
1
Q
At the centre of every atom are smaller, sub-atomic particles What are these called?
A
Protons and neutrons
2
Q
What part of the atom does the protons and neutrons make up?
A
The nucleus (plural nuclei)
3
Q
What does The number of protons in the nucleus define?
A
whether the atom is an atom of hydrogen (with 1 proton), helium (2 protons), carbon (6 protons), or some other chemical element.
4
Q
The neutrons in the nucleus of an atom can vary, what are Variants of a given element with different numbers of neutron called?
A
Isotopes