C1.1 The fundamental ideas

Question 1

What will a group 1 element reacted with water produce?

Answer 1

Metal hydroxide + hydrogen

Question 2

Why are the noble gases unreactive?

Answer 2

The atoms have stable arrangements of electrons

Question 3

All noble gases have 8 electrons in their outer shell except from _____ , which has _____.

Answer 3

Helium, 2 electrons

Question 4

When elements react and their atoms join with other atoms, what is formed?

Answer 4

A compound

Question 5

What do compounds formed from metals and non-metals consist of?

Answer 5

Ions

Question 6

What do compounds formed from non-metals consist of?

Answer 6

Molecules

Question 7

What is the charge on a metal ion?

What is the charge on a non-metal ion?

Answer 7

+1

-1

Question 8

What does the ‘conservation of mass’ mean in terms of chemical reactions?

Answer 8

The mass of the reactants is equal to the mass of the products

Question 9

When is a compound formed?

Answer 9

When elements react and their atoms join with other atoms