Chemistry 2

Question 1

Name a substance which contains only one type of atom and does NOT conduct electricity.

Answer 1

Non-metallic element.

Question 2

Name a type of substance that contains two types of atoms. The atoms are chemically combined together in fixed proportions.

Answer 2

A compound

Question 3

What is the name of the elements in Group 0 of the periodic table?

Answer 3

Noble gases

Question 4

Which statement about the elements in Group 0 is correct?

Answer 4

All element in the group are very reactive.
Or
The boiling points increase down the group.

Question 5

Neon is in Group 0.
What type of particles are in a sample of neon? Pick one.

Answer 5

Atoms, Irons or Molecules

Question 6

What type of substance will neutralise potassium hydroxide solution?

Answer 6

Acid

Question 7

What is the pH of the neutral solution?

Answer 7

7

Question 8

Sodium is in the same group as potassium.
(i) How does sodium react with cold water and what is formed?

Answer 8

Reacts rapidly /
Quickly /
Fast

Question 9

How can you prove that an alkaline solution is formed when sodium reacts with water?

Answer 9

Add universal indicator