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Friendly Chemistry Lessson 2

Terms in this set (8)

What are the "ingredients" of an element called?

What is the Atomic Theory?

The Atomic Theory is the theory that all matter is made up of elements which are made of atoms.

What are the three parts of an atom, and what is their scientific name?

Neutrons, protons, electrons. Atomic particles.

What is the center of an atom?

Nucleus, containing protons and neutrons

What circles around the nucleus?

The electron cloud, containing electrons

Mass is the amount of matter in an object.

Out of protons, neutrons, and electrons, which have the most mass?

The protons and neutrons have the most mass

What is the atomic number of an element?

It is the number (generally) of all subatomic particles in an atom

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