Elements

Question 1

What is an atom?

Answer 1

An atom is the tiniest part of a complete element. Elements join together in different ways to make the millions of substances.

Question 2

Each element has a chemical symbol and a Valency. What does Valency mean?

Answer 2

The Valency of an element is the measure of its combining power with other atoms when it forms compounds. i.e. the number of hooks.

Question 3

Chemical symbol and valency for Hydrogen?

Answer 3

H. 1.

Question 4

Chemical symbol and valency for Helium?

Answer 4

He. 0.

Question 4

Chemical symbol and valency for Carbon?

Answer 4

C. 4.

Question 5

Chemical symbol and valency for Nitrogen?

Answer 5

N. 3.

Question 6

Chemical symbol and valency for Oxygen?

Answer 6

O. 2.

Question 7

Chemical symbol and valency for Fluorine?

Answer 7

F. 1.

Question 8

Chemical symbol and valency for Neon?

Answer 8

Ne. 0.

Question 9

Chemical symbol and valency for Sodium?

Answer 9

Na. 1.

Question 10

Chemical symbol and valency for Magnesium?

Answer 10

Mg. 2.

Question 11

Chemical symbol and valency for Aluminium

Answer 11

Al. 3.

Question 12

Chemical symbol and valency for Phosphorus?

Answer 12

P. 3.

Question 13

Chemical symbol and valency for Sulphur?

Answer 13

A. 2