Atoms, Elements and Compounds

• What are the sub-atomic particles in an atom?

  Protons, Neutrons and Electrons
• What sub-atomic particles are in the nucleus?

  Protons and neutrons
• What is the relative charge of an electron?

  -1
• What is the relative charge of a proton?

  +1
• What is the relative charge of a neutron?

  0
• What is an atom?


  The building blocks of everything (matter). They are a pure substance made from only one type of atom
• What is an element?

  Elements are a single type of atom. They can be individual atoms or can bond with other elements which are the same type of atom.
• What is a compound?

  A compound contains two or more types of atoms (elements) which are chemically bonded together
• What is a molecule?

  A small group of atoms strongly bonded together. They can be the same type of atom (e.g. elements) or different types (e.g. compounds)
• Where can the formula for a single atom be found?

  On the periodic table
• How do you know how many atoms are in an element?

  Using the subscript number
• What is a mixture?


  Two or more types of atom that are not bonded