Question

name ____________ period __________ date ____________
study guide - atomic structure

1. how many elements in periodic table?
2. name the 3 subatomic particles:
3. identify different parts of the atom:
4. atom
5. ______________ s
6. ______________ c
7. ______________ -
8. fill in the table.

subatomic particle charge mass location in atom

Explanation:

Step1: Answer question 1

As of now, there are 118 elements in the periodic table.

Step2: Answer question 2

The three sub - atomic particles are protons, neutrons, and electrons.

Step3: Answer question 3

In a typical atomic model: 2 is the electron cloud, 3 is the nucleus, 4 is an electron.

Step4: Answer question 4

Subatomic Particle	Charge	Mass	Location in atom
Neutron	Neutral (0)	Approximately 1 amu	Nucleus
Electron	Negative (-1)	Approximately 0.00055 amu	Electron cloud

Answer:

1. 118
2. Protons, neutrons, electrons
3. 2: Electron cloud; 3: Nucleus; 4: Electron
4. See the above - created table.