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

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

In the following diagram, what does number 12 represent ?

He discovered the neutron in the nucleus and completed the current atomic model.

He found that atoms have smaller parts and found negative electrons that eh theorized were surrounded in a sphere of positive charges

He found that positively charged protons in the nucleus and said that electrons moved around the nucleus

He found that electrons have specific amounts of energy and move in specific orbits around the nucleus, like planets orbiting the sun.

Which one has no charge?

Which one has a positive charge?

Which one has a negative charge?

Which one contains an atomic mass?

Found in nucleus?

Atoms of the same element must always have the same number of?

The mass number of an element that has 18 protons, 18 electrons and 19 neutrons is?

The atomic number of an element that has 9 protons , 9 electrons, 10 neutrons is?

Democritus called the tiniest particles of matter "atomos", which Greek is for?

The electron was discovered in 1897. Who discovered it?

An atom has 5 protons, 6 neutrons and 5 electrons. What is the mass number of the atom?

Subatomic particle that determines the identity of the atom

An atom has an atomic number of 15 and a mass of 31. How many protons are there in the atom?

Describe an Electron cloud.

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

Who first proposed that everything in the world was up of tiny particles?

Which philosopher stated that matter was made up of four elements : earth, wind, water, and fire