Bonding

Question 1

What is meant by an atom

Answer 1

Smallest particle of an element

Question 2

What is meant by a molecule

Answer 2

two or more atoms held together by covalent bonds

Question 3

What is a compound?

Answer 3

Two or more elements chemically combined

Question 4

Covalent bonding exists between…

Answer 4

Non metals

Question 5

What is covalent bond an attraction off

Answer 5

Covalent bond is an electrostatic attraction between both neclei in the bond and the a shared pairof electrons

Question 6

Why do non-metals join covalent bonds

Answer 6

non-metal atoms join covalently in order to achieve a full outer shell of electrons

Question 7

What is a lone pair of electrons

Answer 7

An unshared pair of electrons (or electrons that are not involved in bonding)

Question 8

What is a covalent molecule

Answer 8

When 2 non-metals share unpaired electrons

Question 9

What is an ion

Answer 9

A charged atom

Question 10

What is a covalent network?

Answer 10

A structure where atoms are covalently bonded

Question 11

How does the process of electron transfer leads to an ionic bond

Answer 11

The oppositely charged ions are strongly attracted to each other, forming ionic bonds .

Question 12

What’s the charge on metals when they become ions

Answer 12

positively charged, metal atoms loose negative charges to form positively charged

Question 13

What happens to non-metals when they become ions

Answer 13

They become negatively charged

Question 14

Describe the structure of ionic compounds

Answer 14

An ionic compound is a giant structure of ions. The ions have a regular, repeating arrangement called an ionic lattice

Question 15

When does metallic bonding occur

Answer 15

Among metal atoms

Question 16

In metallic bonding what are free to move about

Answer 16

The outer electrons and this leaves positive metal ions

The moving outer electrons are often described as a sea of delocalised electrons

Question 17

Why do metals conduct

Answer 17

due to the metallic bonding found within metal elements

Question 18

Describe the properties of covalent bonds

Answer 18

Covalent bonds never conduct electricity and have lower melting points

Question 19

Describe the properties covalent molecules

Answer 19

low boiling and melting points and do not conduct energy

Question 20

Describe the products of covalent networks

Answer 20

High boiling points

Question 21

Identify a linear molecule

Answer 21

A linear molecule has 2 bonds and 0 lone pairs

Question 22

Identify an angular molecule

Answer 22

If there are two bond pairs and two lone pairs of electrons

O
/ \
H H

Question 23

What’s an ionic bond between

Answer 23

A positively charged metal ion and a negatively charged non-metal ion

Question 24

What’s a covalent bond between

Answer 24

Non-metals