Atomic Mass and Number:

Question 1

What is the atomic number?

Answer 1

• Number of protons and electrons.

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Question 2

What is the mass number?

Answer 2

• Number of Protons + Neutrons.

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Question 3

What are isotopes?

Answer 3

• Same element that have different number of nuetrons.

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Question 4

What are ions?

Answer 4

• Atoms with an overall charge.

Either Positive or Negative depending whether it looses or gains electrons.