C3 Ionic Bonding, Metallic Bonding And Structure

Question 1

Ion?

Answer 1

An atom that has gained or lost electrons

Question 2

What kinds of elements form ionic bonds?

Answer 2

Metals and non metals 🤘

Question 3

What charges do ions from Groups 1 and 2 form?

Answer 3

Group 1 form 1+ Group 2 form 2+

Question 4

What charges do ions from Groups 6 and 7 form?

Answer 4

Group 6 form 2- and Group 7 form 1-

Question 5

Name the force that holds oppositely charged ions together?

Answer 5

Electrostatic force of attraction

Question 6

Describe the structure of a giant ionic lattice

Answer 6

regular structure of alternating positive and negative ions, held together by the electrostatic force of attraction

Question 7

Y do ionic substances have high melting points?

Answer 7

The electrostatic force of attraction between positive and negative ions is strong and requires lots of energy 🔋 to break

Question 8

Y don’t ionic substances conduct electricity 💡 when solid ?

Answer 8

Ions r fixed 🔧 in position so cannot move, and there r no delocalised electrons

Question 9

When can ionic substances conduct electricity 💡?

Answer 9

When melted or dissolved

Question 10

Y do ionic substances conduct electricity when molten?

Answer 10

Ions r free to move 📦 and carry charge

Question 11

Describe the structure of a pure metal

Answer 11

Layers of positive metal ions surrounded by delocalised electrons

Question 12

Describe the bonding in a pure metal 🤘

Answer 12

Strong electrostatic forces of attraction between 🎰 metal 🤘 ions and delocalised electrons

Question 13

What r four properties of pure metals 🤘 🤘 ?

Answer 13

Malleable
High melting/boiling points
Good conductors of electricity 💡
Good conductors of thermal energy 🔋

Question 14

Explain y pure metals r malleable

Answer 14

Layers can slide over each other easily

Question 15

Explain y metals have high melting and boiling points

Answer 15

The electrostatic force of attraction between positive metal ions and delocalised electrons is strong 💪 and requires a lot of energy to break

Question 16

Y r metals good conductors of electricity and of thermal energy 🔋?

Answer 16

Delocalised electrons are free to move 📦 thru the metal 🤘

Question 17

Alloy?

Answer 17

A mixture of a metal with atoms of another element

Question 18

Explain y alloys r harder than pure metals

Answer 18

Different sized atoms disturb the layers, preventing them from sliding over each other