Atoms

Oxygen has an atomic number of 8. What can you conclude from this fact?

An atom of oxygen has 8 protons.

In carbon's identification what does the number 12 stand for?

An atomic mass.

What might happen if the strong force didn't exist?

Atomic nuclei would fly apart.

What can you conclude from the fact that electrons orbit far away from atomic nuclei?

Atoms are comprised mostly of empty space.

Which of the following is an example of a subatomic particle?

Electron.

What is the significance of the periodic table of elements?

It predicts and list all the chemical elements in the universe.

What two types of particles exists within an atomic nucleus?

Protons and neutrons.

The word atom comes from the Greek word for indivisible. In what way are atoms indivisible?

They cannot be broken apart without losing their chemical properties.

How are molecules different from atoms?

They consist of several atoms bonded together.

What do electrons in the same shell have in common?

They have the same amount of energy.