Question of the Week
Quarter 4

QoW #

  
3.18

1.) Explain the difference between a mixture and a compound

2.) What is the smallest part of an element?

3.)Explain why both elements and compounds are classified as pure substances.

Explain the difference between a suspension and a colloin.

4.19

Due april 7

1.)Name the sub atomic particles and their charge, that the modern atom model has.

2.) (a) What is the mass of the positive charged particle in the atom
.......(b) what is the mass of the negative sub atomic particle.

3.) What is responsible for the actual size of the atom?

4.) (a) Explain what an isotpe is and give an example.
.....(b) Are all isotopes radioactive?

4.20

Due april 14

 1.) What determines what kind of element an atom will be?
2.) What do all atoms wanna be?
3.) Explain what an ion is.
4.) Draw the NABM model for the following ions: Ca+2 S-2 Cl-1, N-3 and K+1.) What determines what kind of element an atom will be?

4.21

April 17-20
  • Why does a bohr model help explain what will happen to the electrons of an atom?
  • Why are metals so good at conducting electricity?
  • What is the difference between how valence electons behave in covalent and ionic bonds?
  • What is a chemical bond?