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Flashcards in Chapter 9 Deck (28):
1

At the center of every atom is a _______ containing protons and neutrons

Nucleus

2

The nucleus represents most of the atom's ________

Electrons

3

The rest of the atom is empty except for the atom's

Electrons

4

What is an electron cloud?

The area of space around the nucleus

5

Does an electron's energy depend on what level it is in?

Yes, electrons in the level closest to the nucleus have the lowest amount of energy and are said to be in energy level one. Electrons farthest from the nucleus have the highest amount of energy and are the easiest to remove.

6

What are energy levels?

The different areas for an electron in an atom

7

How many electrons are in level 1?

2

8

How many electrons are in level 2?

8

9

How many electrons are there in level 3?

18

10

How many electrons are in level 4?

32

11

How many electrons are in level 5?

50

12

How many electrons are in level 6?

72

13

How many electrons are in level 7?

98

14

What is an ion?

An atom that is no longer neutral because it has lost or gained an electron

15

What is an ionic bond?

The attraction that holds ions close together

16

What is a compound?

Pure substance containing two or more elements that are chemically bonded

17

What is a metallic bond?

Forms when metal atoms share their pooled electrons

18

What is a covalent bond?

The chemical that forms between nonmetal atoms when they share electrons

19

What is a molecule?

Neutral particle formed when atoms share electrons, basic unit of a molecular compound

20

What is a polar molecule?

Electrons are shared unequally, partial positive charge and partial negative charge

21

What is a non-polar molecule?

Equal sharing of electrons

22

Is it easier to remove an electron close to the nucleus or farther away?

Farther away, because there is less of an attraction

23

What are electron dot diagrams?

Symbol for the element surrounded by as many dots as there are in its outer shell energy levels

24

What kind of bond is water, H2O?

Polar

25

Which group forms covalent bonds?

Group 14

26

What is a double bond?

When two pairs of electrons are involved in a covalent bond

27

Which group has a stable outer energy level?

Group 18

28

Which groups form ionic bonds?

1,2,13,15,16, and 17