Atoms and Isotopes Flashcards
1
Q
What are protons?
A
- heavy
- positively charged
2
Q
What are neutrons?
A
- heavy
- neutral
3
Q
What are electrons?
A
- hardly any mass
- negatively charged
4
Q
What is the nucleus?
A
- middle of the atom
- contains protons and neutrons
- has a positive charge (protons)
- mass in concentrated
5
Q
What are electrons?
A
- move around the nucleus in energy levels called shells
- negatively charged
- tiny
- no mass
6
Q
What are isotopes?
A
- Isotopes are different atomic forms of the same element which have the same number of protons but different number of neutrons
