1. Warm-up Wednesday 9/13
Explain what two opposing forces are acting on an object floating in water?  
Weight is pushing down and buoyant force is pushing up. 

2. Exit Bending a copper wire is an example of what type of property?
 Physical

3. Warm-Up Thursday 9/14
Water an example of….
A compound

4. Exit
 Burning is an example of what type of change?
Chemical change

5. Warm-Up Friday 9/15
What type of substance is gelatin?  
A colloid

6. Exit Moldy bread is an example of what type of change?
A chemical change

7. Warm-up Monday 9/18
What hazards, if any, are there with the compounds we will be working with today?

8. Exit
How would you classify the color of a rose?  
physical property

9. Warm-up Tuesday 9/19
How would you describe the process of evaporating water from seawater?  
It is a physical change

10. Exit Tuesday 9/19
Describe the contents of a carton of milk using at least four physical properties.
Is is white, it is a liquid at room temperature, it is wet, it is a colloid.

11. Warm-Up Wednesday 9/20
What is a heterogeneous mixture with larger particles that never settle?  
A colloid

12. Exit Wednesday 9/20
What is a heterogeneous mixture containing a liquid in which visible particles settle?  
A suspension

13. Warm-up Thursday 9/21
Students will read the SDS sheets for the lab stations and write down any precautions for today.

14. Exit Thursday 9/21 Is ocean water a solution or a suspension?
It is both. Ocean water contains dissolved salts, therefore it is a solution. It is also a suspension because it contains loose sand and other materials in suspension.

15. Warm-Up Friday 9/22
What types of changes occur when a candle burns?  Explain.  
Physical:  some of the solid candle is melting.  Chemical:  heat, lights and smoke are produced during burning.  These indicate that new substances are being formed

16. Exit Friday 9/22
Explain why evaporation of water is a physical change and not a chemical change.
The makeup of water units is unchanged.

17. Warm-UP Monday 9/25
Explain what is meant by the Law of Conservation of Mass.

18. Exit Monday 9/25
How does the Law of Conservation of Mass apply to physical and chemical changes?
The mass of all substances present before a chemical change equals the mass of all the substances remaining after the change. 

19. Warm-up Tuesday 9/26
Give some examples of solutions, suspensions, and colloids from your daily life.

20. Exit Tuesday 9/26
 If something is flammable, it is referring to what type of property?
A chemical property.  

21. Warm-Up Wednesday 9/27
How do the position of the particles in a solid compare with the position of particles in an equal volume of liquid?   
The particles in a solid oscillate in place and have less energy than do the particles in a liquid.

22. Exit Wednesday 9/27
What do we call the temperature at which a solid begins to liquefy?  
Melting point.

23. Warm-Up Thursday 9/28
What aspect of a boat might help it float even when it is made of a material that does not?
An object’s density indicates whether it will sink or float. Density is determined by dividing mass by volume. Steel is denser than water, yet a submarine floats. Its mass is pread out and the interior filled with air, makes the combination less dense than water.

24. Exit Thursday 9/28 Distinguish between a substance and a mixture.
A substance must be either an element or a compound.  Mixtures can be made from combinations of compounds or elements.  

25. Warm-up Friday 9/29 Why is vinegar considered a solution?
Vinegar does not settle out into its components. 

26. Exit Friday 9/29 In terms of thermal expansion, why is water unusual?
Water expands when it foes from the liquid to the solid state.