Week 3: Periodic Table and Reactivity

Question 1

What is Group 1 called?

Answer 1

Alkali Metals

Question 2

What is Group 2 called?

Answer 2

Alkaline Earth Metals

Question 3

What do Group 1 and 2 form?

Answer 3

s-block

Question 4

What are group 7 elements called?

Answer 4

Halogens

Question 5

What are group 8 elements called?

Answer 5

Noble gases

Question 6

What are groups 3-8 grouped as?

Answer 6

p-block

Question 7

What makes up the f-block?

Answer 7

Lanthanides and actinides

Question 8

Where are the metals found on the periodic table?

Answer 8

Left side (Group 1 and 2)

Question 9

Where are the non-metals found on the periodic table?

Answer 9

Right side

Question 10

What are in between the metals and non-metals on the periodic table?

Answer 10

Semi-metals or metalloids

Question 11

What are the common properties of metals?

Answer 11

• Shiny appearance
• Conduct heat
• Conduct electricity
• Malleable and ductile
• Tend to form positive ions and have basic oxides

Question 12

What properties do non-metals tend to have?

Answer 12

• Form negative ions or covalent compounds.
• Have acidic oxides.

Question 13

What properties do semi-metals have?

Answer 13

Intermediate properties (either properties depending on state)

Question 14

What is the structure of a metallic bond?

Answer 14

“Ions in a sea of electrons”
- Electrons are delocalised as they are not associated with sodium particles. Free to move throughout the structure.

Question 15

What holds the structure of a metallic bond?

Answer 15

The strong electrostatic force made from the positively charged ions and electrons attracting eachother.

Question 16

Why can metals conduct electricity?

Answer 16

As the electrons present will move when an electrical potential difference is applied across the metal.

Question 17

What influences electrical conductivity?

Answer 17

Number of electrons per particle
(e.g. Group 2 metals are better conductors than Group 1).

Question 18

Why can metals conduct heat?

Answer 18

If heat is applied to one end of a metal, thermal motion can be transmitted by electron movement.

Question 19

What makes metals malleable and ductile?

Answer 19

The positions of ions in a metal are not fixed as they are in an ionic lattice so they can move about.

Question 20

What are negative ions called?

Answer 20

Anions

Question 21

What are positive ions called?

Answer 21

Cations

Question 22

Describe ionic compounds

Answer 22

Cations and anions held together by electrostatic attractions in a lattice arrangement.

Forms a salt with a high melting and boiling point.

Conducts heat and electricity when molten.

Has good solubility in polar solvent such as water.

Question 23

What is valency?

Answer 23

• How many atoms of one element combine with another.
• Controlled by the number of electrons.

e.g.
Na = valency of +1 (wants to lose one electron)

Cl = valency of -1 (wants to gain an electron)

Therefore they combine in a ratio of 1:1 NaCl

Question 24

How do you name a metal and non-metal compound?

Answer 24

Metal first

Question 25

How do you name a non-metal compound?

Answer 25

Substance closest to the metal