1. 1. Draw and label a model of Bromine (Br) 2. Decode silver tetrafluoroborate : AgBF 4 3. Is water an element, compound, or mixture? Explain. 4. Is Bromine an element, compound, or mixture? Explain 5. Is a leaf on a plant an element, compound, or mixture? Explain

2. Why did the second man die?

3. You shouls be able to :  Identify and describe different ways to change the speed of a chemical reaction  Describe the different techniques and explain how they change the speed of a chemical reaction

4.  energyconcentration  temperaturepressure  catalystinhibitor  collision theoryenzyme  pulverize

5.  What causes a chemical reaction to occur?  When chemicals react – what part of the elements are involved in the reaction?  How do you know a chemical change has occurred?

6. Collision theory Collision theory – the more molecules collide together, the faster the reaction occurs HOW?

7. Change the:  Temperature  Surface area  Concentration  Add a catalyst http://www.media.pearson.co m.au/schools/cw/au_sch_ricka rd_sd4_1/int/reactions.html