What is an atom?

What are differences between an element and a compound?

How are compounds formed?

What is the trend when naming compounds?

What is a mixture?

How are mixtures separated?

How do you extract dissolved solids?

What is the atomic model proposed by J.J. Thomson?

what key information about the atom was found in Rutherford's scattering experiment?

What did Bohr propose?

What are the relative charges of protons, neutrons and electrons?

In an atom, what is the trend between number of protons and number of electrons?

Where can I find the number of proton on the Periodic Table?

What part of the nucleus makes elements different?

Define a nanometer

What is the relative size of a proton, neutron and electron?

What is the atomic mass?

Define an Isotope?

What is the trend of electrons in the first three electron shells?

Do electrons fill the highest energy level or the lowest energy level first?

What is the trend between group number and electron configuration?

How is the Periodic Table organised?

Why are elements organised into groups?

What do the rows tell you in the Periodic Table?

How was the Periodic Table organised?

What was the problem with the early Periodic Table?

What did Mendeleev do?

What did knowledge of isotopes lead to?

What are group 1 elements referred as?

What are the similarities and difference with alkali metals?

What do alkali metals react with?

How are ions formed?

Why are Group 0 elements called Noble Gases?

Why are Noble Gases unreactive? What trends do you see?

What are Group 7 elements known as? Why do they have similar properties?

What is trend of properties as you go down group 7?

What happens when a halogen reacts with a metal?

What happens when you introduce a more reactive halogen to a salt containing a less reactive halogen?