GCSE Chemistry: Structure of the Atom
Atoms are the building blocks of all matter. They consist of a nucleus surrounded by electrons.
Do you know the relative charges of subatomic particles?
What is GCSE Chemistry: Structure of the Atom?
"An atom is the smallest part of an element that can exist, consisting of a central nucleus containing protons and neutrons, orbited by electrons."
What is the charge of a proton?
Why is an atom electrically neutral?
If an atom has an atomic number of 11 and a mass number of 23, how many protons does it have?
Subatomic Particles
Protons have a mass of 1 and a charge of +1.
Neutrons have a mass of 1 and a charge of 0 (neutral).
Electrons have a very small mass and a charge of -1.
The number of protons in an atom is its atomic number, which defines the element.
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