At the Centre of Every Atom is a Nucleus Flashcards
1
Q
What does the nucleus of an atom contain?
A
Protons and neutrons
2
Q
It makes up most of the …… of the atom but takes up virtually no …… - its tiny
A
Mass
Space
3
Q
What is the number of protons in the nucleus called?
A
The atomic number or proton number
4
Q
What is the total number of protons and neutrons in the nucleus called?
A
The mass number or nucleon number
5
Q
How are the electrons charged and how big are they?
A
Negatively charged
Really really small
6
Q
Where do the electrons whizz around?
A
The outside of the atom
7
Q
Atoms are neutral so…
A
The number of protons = number of electrons
8
Q
Protons and electrons have an …
A
Equal but opposite charge
