Atoms Flashcards
(15 cards)
Where about is the nucleus in the atom
It’s in the centre of the atom
What does a nucleus contain
Protons and neutrons
What charge does a nucleus have
A positive charge because of the Protons
What do electrons do
Move around the nucleus
What charge does an electron have
Negative
What does the volume of their orbit determine
How big an atom is
What are electrons arranged in
Shells around the nucleus
Protons are…
Heavy and positively charged
Neutrons are…
Heavy and neutral
Electrons are…
Tiny and negatively charged
What does the number of protons always equal
The number of electrons in a neutral atom
What happens if an electron is added or removed
The atom becomes charged an is then an ion
What is a neutron the same as
The proton
Why do all elements have different properties
Due to differences in their atomic structure
What are atoms
The building blocks for everything
