1
What is the smallest unit of an element that retains its properties?
2
Which subatomic particle has a negative charge and orbits the nucleus?
3
Where is the positive charge of an atom concentrated?
4
What is the total number of protons and neutrons in the nucleus called?
5
Which particle defines the identity of an element?
6
What is the neutral subatomic particle inside the nucleus called?
7
The total number of protons in an atom is its what?
8
Which term describes atoms of the same element with different numbers of neutrons?
9
What is the region around the nucleus where electrons are likely to be found?
10