C2 - The Periodic Table

Question 1

What are the group 1 elements called in the periodic table?

Answer 1

Alkali metals

Question 2

What are the group 7 elements called?

Answer 2

Halogens

Question 3

What are the elements in the centre block of the periodic table called?

Answer 3

Transition elements

Question 4

What is the definition of universal indicator?

Answer 4

a mixture of indicators that can change through a range of colours to show how strongly acidic or alkaline liquids and solutions are

Question 5

How are the elements in the periodic table arranged?

Answer 5

They are arranged in order of increasing atomic (proton) number, elements with similar properties are arranged in groups, and elements with the same number of electron shells are in the same period.

Question 6

What is a significant model for ordering the elements (periodic table)

Answer 6

Newton’s Law Of Octaves

Question 7

Definition of Group in the periodic table

Answer 7

A group contains elements with same number of electrons in their outermost shell due to which they show similar properties. They are the vertical columns.

Question 8

Definition of period on the periodic table

Answer 8

A period on the periodic table is a row of chemical elements.

Question 9

Why are noble gases unreactive?

Answer 9

Because they already have a full outer shell of electrons, so they don’t need to get electrons, or lose electrins.

Question 10

Why do group 1 (alkali metals) elements have low densities?

Answer 10

Because they have vast atomic radius, and low weight.

Question 11

How are the electronic structures of metal atoms and non metal atoms different?

Answer 11

Metal atoms give away electrons in their reactions to gain a positive charge, while Non metal atoms gain electrins in their reactions to gain a negative charge.

Question 12

What is the trend of the boiling point of noble gases (Group 0) as you go down?

Answer 12

The boiling point increases.

Question 13

What happens to the reactivity of the group 1 elements as you go down the group (metals)

Answer 13

The reactivity increases

Question 14

What happens to the reactivity of group 7 as you go down the group?

Answer 14

The reactivity decreases.

Question 15

What is a halogen displacement reaction?

Answer 15

A displacement reaction is when more reactive halogen can displace a less reactive halogen from a solution of its salt.

Question 16

What are the main properties of halogens?

Answer 16

They have low melting and boiling points

Question 17

Different properties of the transition elements than group 1 elements (name 3)

Answer 17

High melting points (group 1 elements have low melting points)
Hard (group 1 metals are soft)
High density (group 1 metals have lower densities)

Question 18

Why are the transition elements named so?

Answer 18

Because they are unstable/show transitional behaviour between s and p block elements.

Question 19

What do transition elements conduct?

Answer 19

Heat and electricity

Question 20

What is reduction? (in terms of electrons)

Answer 20

Reduction means the gain of electrons

Question 21

What is meant by oxidation? (In terms of electrons)

Answer 21

It means the loss of electrons