Atoms and Elements Flashcards Preview

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Flashcards in Atoms and Elements Deck (10):
1

Describe a NUCLEUS

In the MIDDLE of an atom
Contains PROTONS and NEUTRONS
POSITIVE charge
TINY compared to the size of the atom (grain of sand in a room)

2

What charge does a PROTONS have?

Positive

3

What charge does a NEUTRONS have?

No charge - Neutral

4

Describe Electrons

Move AROUND the nucleus
NEGATIVELY charged
They're TINY, but they cover A LOT of space
They occupy SHELLS around the nucleus

5

What charge does an ATOM have?

No charge overall

6

Number of Protons = ...

... the Number of Electrons

7

The charge on the electrons is the [ ] size as the charge on [ ] but opposite

Same
Protons

8

If some electrons are ADDED or REMOVED...

... then the atom becomes CHARGED and then is an ION

9

[ ] consist of ONE TYPE of atom only

Element

10

How many ELEMENTS are there?

About 100