Materials

Question 1

Where are the subatomic particles in an atom?

Answer 1

Protons and Neutrons are in the nucleus, and electrons are in the surrounding space.

Question 2

What is the charge of each subatomic particle?

Answer 2

Proton: +ve
Neutron: No charge
Electron: -ve charge

Question 3

What is the mass of each subatomic particle?

Answer 3

Protons and neutrons have a mass of 1, and electrons have 1/1800.

Question 4

What is the atomic number?

Answer 4

The atomic number is the no. of protons, and it determines what element it is. The number of electrons is generally the same. In a box, it is in the bottom left corner.

Question 5

What is the mass number?

Answer 5

Number of protons + neutrons.

It is approximately the average atomic mass.

Question 6

How do you figure out the number of each subatomic particle from a mass number and atomic number.

Answer 6

Protons and electrons = atomic number

Electrons = mass number - atomic number

Question 7

How many electrons can be found on each level?

Answer 7

2, 8, 18.

n=2n^2

Question 8

What are valence electrons

Answer 8

The number of electrons in the outermost energy level.

Question 9

What are periods and groups on the periodic table?

Answer 9

Groups - column

Periods - row