The concept that matter was made up of atoms was first explored by an ancient Greek philosopher

• Heraclitus

• Aristotle

• Empedocles

• Democritus

Who was the Greek philosopher who thought that the basic element of matter was water?

A particle named by Ernest Rutherford

• Proton

• Nuetron

• Electron

• Atoms

A particle discovered by James Chadwick

• Proton

• Electron

• Nuetron

• Atoms

Most abundant element in the universe

• Nitrogen

• Carbon

• Oxygen

• Hydrogen

A water is a _____ type of molecule

• Non polar

• polar

• ionic

• dipole

CH4 is what type of molecule

• Non polar

• polar

• ionic

• dipole

Who said that the basic element of matter was air

• Heraclitus

• Thales

• Anaximenes

• Aristotle

An element with the highest electronegativity

• Chlorine

• Oxygen

• Hydrogen

• Fluorine

Symbol of Iron

• I

• Ir

• Fe

• F