Chemistry Yr 9 EOY Atomic Structure Flashcards
In an atom, what surrounds the nucleus?
It is surrounded by electrons arranged in shells
What do the nuclei of all atoms contain?
Protons
The nuclei of most atoms also contain…
Neutrons
Protons and electrons have…
Electrical charges that are equal and opposite
Protons are…
Positive
Neutrons are…
Neutral
Electrons are…
Negative
The number of protons in an atom of an element is it’s…
Atomic number
All atoms of a given element have the same…
Number of protons
Atoms of different elements have different…
Numbers of protons
An atom contains an equal…
Number of protons and electrons
Since protons and electrons have equal and opposite charges, this means that atoms…
Have no overall electrical charge