Structure And Bonding

Question 1

What do atoms contains?

Answer 1

Neutrons, electrons and protons

Question 2

What are the shells orbiting the nucleus?

Answer 2

Electrons

Question 3

What is in the nucleus of an atom?

Answer 3

Protons and nuetrons

Question 4

Number of protons =

Answer 4

Atomic number

Question 5

Number of neutrons =

Answer 5

Mass number - atomic number

Question 6

What do noble gases never form?

Answer 6

Chemical bonds

Question 7

Why don’t noble gases for chemical bonds?

Answer 7

Their at9md all have full outer shell of electrons

Question 8

What are the two ways atoms can get a full out shell?

Answer 8

Transferring electrons forming ions (ionic bonding)
Sharing electrons forming molecules (covalent bonding)

Question 9

Where does ionic bonding only occur?

Answer 9

In compounds (not elements)

Question 10

What must compounds contain?

Answer 10

A mental bonded to a non metal.

Question 11

What do metal atoms always loose?

Answer 11

Their outer shell electrons to form a positive ion.

Question 12

Where are electrons transferred in ionic bonding?

Answer 12

From a metal atom to a non-metal atom to form a positive metal atom and a negative non-metal atom.

Question 13

What is ionic bonding?

Answer 13

An electrostatic attraction between ions of opposite charge

Question 14

What must the total number of electrons lost by the metal atoms be?

Answer 14

The same as the number gained by the non-metal atom.

Question 15

Define molecular ions

Answer 15

A molecular ion is a group of atoms he,p together by covalent bonds with an overall charge.

Question 16

NH(4)+

Answer 16

Ammonium ion

Question 17

OH-

Answer 17

Hydroxide

Question 18

NO-(3)

Answer 18

Nitrate

Question 19

CO(3)[2]-

Answer 19

Carbonate

Question 20

SO[2]-(4)

Answer 20

Sulfate

Question 21

What are dot cross diagrams used to show?

Answer 21

How the electrons are transferred from the metal atoms to the non-metal atoms to form the positive and negative ions in an ionic compound.

Question 22

Number of covalent bonds in group 0 (noble gases)

Answer 22

0

Question 23

Number of covalent bonds in Hydrogen

Answer 23

1

Question 24

Number of covalent bonds in group 7 (e.g F)

Answer 24

1

Question 25

Number of covalent bonds in group 6 (e.g O)

Answer 25

2

Question 26

Number of covalent bonds in group 5 (e.g N)

Answer 26

3

Question 27

Number of covalent bonds in group 4 (e.g C)

Answer 27

4

Question 28

Convulsant bonding occurs between the atoms in

Answer 28

All the non-metal elements (except noble gases) and in compounds only containing non-metal atoms.

Question 29

What happens when covalent bonding occurs?

Answer 29

Atoms get full outer shells of electrons by sharing electrons either another atom.

Question 30

What is a covalent bond?

Answer 30

A convalent bond is an electrostatic attraction between the positive nuclei of two atoms and the negative pair(s) or electrons shared between them

Question 31

What happens when atoms are joined together by covalent bonds

Answer 31

A molecule is formed

Question 32

Define a molecule

Answer 32

A group of atoms held together by convalent bonds.