Atoms/Elements Post-Lab Quiz

The subatomic particle(s) found in the nucleus of an atom is/are:

• Protons only

• Neutrons only

• Electrons and protons

• Protons and neutrons

Where do electrons live?

• Inside the nucleus also

• On the edge of the nucleus

• In the electron cloud

• They are in a separate atom

Which subatomic particle has a positive charge?

• Protons only

• Neutrons only

• Electrons only

• Protons and neutrons

Which subatomic particle has a negative charge?

• Protons only

• Neutrons only

• Electrons only

• Neutrons and electrons

Why do protons want to repel each other?

• Because they have opposite charges

• Because they have the same charge

• Because they think they’re ugly

• Because they have the same mass

Why DON’T protons repel one another in a stable nucleus? Select all that apply.

• Because of chemical bonds

• Because of the strong force

• Because of neutrons

• Because of electrons

How long did it take scientists to come up with the latest model of the atom?

• 200 years

• 20 years

• 2000 years

• When we developed a camera strong enough to see an atom’s parts (1997)

Do you think scientific discoveries are typically made by one scientist alone or together with other scientists? Explain using examples from the reading you did at lab stations.

What is the best definition of a scientific model?

• A geeky supermodel

• A realistic drawing of something very small

• A piece of artwork that symbolically represents something beautiful in nature

• A physical representation of something that isn’t easily observed to help us understand how it works.

If an atom has 2 protons (+) and one electron (-), what will it’s net charge be?

• +2

• +1

• 0: neutral

• -2