Section 3

Question 1

How many electrons is on each shell

How is it charged?

Answer 1

• 2 electrons
• 8 electrons
• 8 electrons and so on…

Negatively charged particle

Question 2

When last shell is competed what kind of element is is

Answer 2

Stable element

Question 3

Valence electron

Answer 3

Electrons in the outer shell of an atom

Question 4

2 different chemical bonds that allow atoms to fill their outer shell

Answer 4

• covalent bond

- ionic bond

Question 5

Covalent bond

Answer 5

Atoms share 1 or more of their valence electrons with other atoms

Question 6

Covalent bonds could be double or single what does that mean (some are triple)

Answer 6

Single bond
1 electron is shared

Double bond
Sharing 2 pairs of electrons between 2 atoms

Question 7

Ionic bond

Answer 7

Atoms gain or lose some of their valence electrons to become charged particles- ions

Question 8

Ions are..

Answer 8

attracted to each other by their opposite charges

Question 9

Ionic compound

Answer 9

Chemical compound composed of 2 or more ions

Question 10

Metal atoms tend to ….. an electron

Answer 10

Tend to lose an electron

Question 11

Ionisation

Answer 11

Process of losing or gaining electron

Question 12

Ionic compound form when….

Answer 12

Metal + non metal

Question 13

Covalent compound form when….

Answer 13

Non metal + non metal

Question 14

What does actinic number tells you

Answer 14

How manat protons and electrons there are in an atom of the element
F.e H
1 proton
1 electron

Question 15

Atomic group tells you

Answer 15

How many bonds atom can make 
H-1 
Be- 2 
B -3
C-4

Question 16

What is solute

Answer 16

Substance devolving in solvent to form solution

Question 17

Electronegativity

Answer 17

Tendency of some atoms to pull the shared electrons in a covalent bond towards themselves

Ability of atom to attract shared electron
From zero to high looking at the periodic table

Question 18

Polar covalent bond

Answer 18

Electrons are NOT equally shared between atoms forming the bond (OH)

Question 19

Hydrogen bond

Answer 19

Attraction of 2 polar molecules in which hydrogen attracted to an electronegative atom in 1 molecule is attracted to an electronegative atom in other molecule.

Question 20

Polar molecule

Answer 20

Water for example

Question 21

Non polar molecule

Answer 21

Fats

Question 22

Water is good solvent because

Answer 22

It can bond with many polar molecules

Question 23

Aqueous

Answer 23

Any solution in which water is the solvent