Chemistry CAT Flashcards
1
Q
What is an isotope?
A
Atoms with the same number of protons but a different number of neutrons.
2
Q
how do you work out relative atomic mass?
A
isotope mass x isotope abundance / 100
3
Q
Number of electrons?
A
atomic number
4
Q
Number of neutrons?
A
protons - electrons
5
Q
If atoms contain charged particles, why do they not have a charge?
A
They contain the same number of positive protons as negative electrons so they cancel out.
6
Q
Where are electrons found in the atom?
A
In the energy levels
7
Q
What is the mass number of an element?
A
The mass number of an element is the number of protons and neutrons.
