10/4 Warm Up In your Salt Water Race Paper:

1. 10/4 Warm Up In your Salt Water Race Paper: Tell me 2 things you would do different (different variables) Close notebook when you are done

2. In notebook you should have: • Title page “Salt Water Races” • write the variable you will be changing. • Write down your materials needed • Write down the exact procedures • Write down the dependent • and independentvariables • Write down the timeof dissolving for your team • Data Table • Graph • Conclusions (what did you notice influenced how fast salt will dissolve) • 2 things you’d change/do different

3. P1 Data Table

4. Warm up: Copy P2 data table in notebook

5. Warm up: Copy P3 data table in notebook

6. Warm Up: Copy P5 data table in notebook

7. Warm up: In notebook -Make sure you have all 10 steps • Title page “Salt Water Races” • write the variable you will be changing. • Write down your materials needed • Write down the exact procedures • Write down the dependent • and independentvariables • Write down the timeof dissolving for your team • Data Table • Bar Graph • Conclusions (what did you notice influenced how fast salt will dissolve) • 2 things you’d change/do different

8. Warm Up: copy P7 Data Table in notebook

9. In notebook you should have: • Title page “Salt Water Races” • write the variable you will be changing. • Write down your materials needed • Write down the exact procedures • Write down the dependent • and independentvariables • Write down the timeof dissolving for your team • Data Table • Graph • Conclusions (what did you notice influenced how fast salt will dissolve) • Extra credit: Was dissolving a physical or chemical change?

10. What: Effects of Physical and Chemical Changes

11. So what can you do to dissolve things faster? Add heat Decrease particle size Increase the amount of liquid http://www.flickr.com/photos/56676379@N08/5232410098/ http://www.flickr.com/photos/ericawalker/4368239806/lightbox/ http://www.flickr.com/photos/jesh1223/2186803026/lightbox/

12. Decide which is a P or C change that we did to make the salt dissolve faster? • Heated up water • Crushed salt • Dissolved salt • Added HCl Physical Change Physical Change Physical Change Chemical Change

13. Other things that have applications with changes and reactions • Catalyst Hydrogen • Cooking a raw egg • Detergent

14. Review for quiz • Give an example of when each type of energy was released Heat energy  Mothball, Water, Elephant toothpaste labs Light energy  magnesium strips, fuego lab Sound energy  hydrogen balloon, chladni plates

15. Use this graph to answer the following questions in your notebook.

16. Water Phases Graph Questions • What is the temperature range for solid H20? • What is the temperature range for liquid H20? • What is the temperature range for gas H2O? • At what temperature does the solid turn to a liquid? • That point is called: • At what temperature does the liquid turn into a gas? • That point is called? • What is occurring when the temperatures are staying constant? • When are the molecules moving the fastest? • When are the molecules moving the slowest? • What is added or taken away to change the speed of the molecules?