ATOMS AND MOLECULES

Question 1

What is an atom?

Answer 1

The smallest particle of an element that consists of a nucleus that contains the protons and neutrons and is surrounded by electrons in the out shells.

Question 2

What is a molecule?

Answer 2

A group of 2 or more atoms chemically bonded together.

Question 3

What is the mass of a
Proton
Neutron
Electron

Answer 3

1. 1.
   1/1840 OR 0 as it weights virtually nothing.

Question 4

What is the charge of a:
Proton
Neutron
Electron

Answer 4

+1
0 (Neutral)
-1

Question 5

What is an ISOTOPE?

Answer 5

An atom that contains the same number of protons but a different number of neutrons.

NB : They have the same atomic number (protons) but a different mass number.

Question 6

As an isotope has a different number of protons and neutrons how do you work out the Atomic Mass?

Answer 6

A. work out the how many protons and neutrons there are in each isotope. and

B. then multiply each number by the % of the sample.
C. At the numbers together and divide by 100!!

EASY!!!