C1- Atomic Structure Flashcards Preview

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Flashcards in C1- Atomic Structure Deck (8)
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1
Q

What do atoms contain?

A

Protons, neutrons and electrons

2
Q

What is the nucleus in an atom?

A

In the middle of the atom
Contains neutrons and protons
Has a positive charge due to the protons

3
Q

What are the electrons in an atom?

A

They move around the nucleus in electronic shells
Negatively charged and tiny
Electrons have no mass

4
Q

What charge are atoms?

A

Neutral

5
Q

Why are atoms neutral?

A

They have the same amount of electrons and protons so the cancel out each other creating a neutral charge

6
Q

What is an ion?

A

An atom that the number of protons doesn’t equal the number of electrons and has an overall charge

7
Q

What does the atomic number tell us?

A

How many protons there are

8
Q

What does the mass number tell us?

A

The total number of protons and neutrons in the atom