Chemical Bonding Flashcards Preview

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Flashcards in Chemical Bonding Deck (18):
1

Nucleus

Has positive protons and neutral neutrons

2

Electrons

Circle nucleus in shells

3

Atomic number

Number of protons in an atom

4

Mass number

Number o protons plus neutrons

5

Compound

When two or more atoms of different elements have a chemical bond joining them together

6

Octet rule

Atoms will bond together so that each atom attains an electron arrangement with 8 electrons in its outermost shell

7

Ionic bonding

Happens between metals and non metals
Give away or take an electron to fill their outer shell

8

Crystal lattice

Forms from ionic bonding

9

Examples of ionic bonding

Sodium chloride (NaCl)
Magnesium oxide (MgO)

10

Covalent bonding

When both atoms share electrons to get a full outer shell

11

What happens between positive and negative forces of ion

They attract each other

12

In ionic bonds positive and negative ions...

Are mixed together

13

Single covalent bonds

Occurs when atoms share one pair of electrons

14

Double covalent bonds

Formed when atoms share two pairs of electrons

15

Ion

Charged atom/charged group of atoms

16

Elements

Need to react to achieve full outer shells

17

Ionic compound characteristics

Positive and negative ions
Solid at room temp
High melting and boiling points
Soluble in water
Conduct electricity when melted or dissolved

18

Covalent compound characteristics

Consists of individual molocules
Liquid or gas at room temp
Low melting and boiling point
Insoluble in water
Do not conduct electricity