In Thomson's atomic model

The nucleus of the atom is

The mass of a proton or neutron is

Which of the following is an example of a neutrally charged atom.

Protons and neutrons make up about how much of the atom's mass?

Electrons have a

Who performed the gold foil experiment?

Just about all of the mass of the atom is found

What does the atomic number represent?

What does the atomic mass represent?

If the atomic number of oxygen is 8, that means the nucleus must contain

Sodium has an atomic number of 11 and an atomic mass of 23. How many neutrons does it have?

If an isotope of oxygen has 8 protons, 9 neutrons, and 8 electrons, its mass number is

An isotope of an atom has a different number of

Quarks are subatomic particles located

What keeps electrons in motion around the nucleus?

The nucleus is considered

Thomson discovered which subatomic particles.

What is the current atom model called?

When the mass of the nucleus gets too great, protons can fall away from it. This leads to radioactive decay. What causes this?

Which force pulls objects towards each other?

Which theorist believed that the atom was a small indivisible ball?

Which theorist said that electrons orbit around the nucleus like the solar system?

Which theorist found the nucleus?

What is the dense center of the atom called?