Calculating Protons, Neutrons, and Electrons

Neutrons

Which of the parts of an atom have no charge and a mass of 1 amu?

electron cloud or energy level

Where are the electrons located in the atom?

The atomic number

How can you tell the number of protons in an element?

Atomic Mass - # of Protons

How do you find the number of neutrons in a neutral atom?

2

How many neutrons does Helium have?

26

What is the number of protons in this atom?

Atomic Mass

What does the letter Z represent in this graphic? The atomic number or atomic mass?

29

How many protons does copper (Cu) have?

4

How many neutrons does this element have?

Protons + Neutrons

The sum of what subatomic particles make up the mass of an atom?

Helium

What element does this model represent?

20

How many protons does Calcium (Ca) have?

11

How many electrons does Sodium (Na) have?

Proton

Part of the atom with a positive charge; a mass of 1 amu; found in the nucleus

Electron

Part of the atom with a negative charge; a mass of 0 amu; located outside the nucleus in the energy levels

Atom

Makes up all matter, made up of protons, neutrons, and electrons

10

How many neutrons does Neon have?

24

How many neutrons does Scandium have?

Gallium

What element has 39 protons?

Radon

What element has 86 Electrons?