Year 9 stuff (e.g ions and isotopes) Flashcards
1
Q
What is an isotope?
A
Isotopes are atoms with the same number of protons but different numbers of neutrons.
2
Q
An atom has 13 protons and 14 neutrons. What is its mass number?
A
27
3
Q
What is a molecule?
A
A molecule is something made from two or more atoms that are held together by chemical bonds.
4
Q
A