1. Station #1 Regarding atoms: – A. What particle(s) are found in the nucleus? – B. What particles make up most of the mass of the atom? – C. What are valence electrons and why are they important?

2. Station #2 Examine this reaction: Mg + 2CL  MgCl 2 1. What are the reactants and what are the products? 2. Is this equation balanced? Explain how you know! 3. Why does Magnesium bond with 2 atoms of chlorine – why not just one? 4. What type of element is magnesium? Name two properties it must have. 5. What type of element is chlorine? Name two properties it must have.

3. Station #3 Identify each of the following as a CHEMICAL or a PHYSICAL change: 1. A plant turns sunlight, CO2 and water into glucose and oxygen 2. A bicycle chin rusts 3. Water evaporates into steam 4. A piece of chicken is cut into pieces

4. Station #4 Substance A and Substance B are both fine powders. They are mixed together and left over night in the lab. The student returns the next day to the pile of white powder. She runs some tests to determine the freezing point of this powder. To her surprise, it does NOT match the freezing point of either of the original powders. 1. What can she conclude happened? Explain your answer. 2. Video-can footage of the lab taken during the night might reveal what clues that something was going on?

5. Station #5 Identify each of the following as an element, compound, heterogeneous mixture or homogeneous mixture. 1. Apples and oranges in a bowl 2. Salt and water, thoroughly mixed 3. CO 4. Ba 5. H 2 O 6. C 6 H 12 O 6

6. Station #6 Substance A forms a chemical bond with substance B. Describe what is actually happening (In other words, what does it mean to form a chemical bond with another substance?)