NOTE: There are four parts to this assignment. Please submit after completing all parts. Please copy/paste the title/questions with your answers.
Part 1: Matter Properties
Part 2: Density Problems:
Part 3: Physical and Chemical Change:
1) Review and define the following:
2) Describe the results of a physical change and list four examples of physical change that you observe in daily life.
3) Describe the results of a chemical change and list four examples of chemical change that you observe in daily life.
4) Research mercury poisoning in humans. Indicate sources of mercury and whether the mercury in the body undergoes a physical or chemical change. Cite resources. Answer in minimum 100 words and use correct grammar.
Part 4: Mixtures:
Q. 1 What is a mixture?
Q. 2. Distinguish between a homogeneous and a heterogeneous mixture by giving an example that you see around you?
Q. 3. Make a table to compare and contrast solutions, colloids, and suspensions. Include an example of each type of mixture in your table.
Q. 4. Iron filings are attracted by a magnet. This is a physical property of iron but not of most other materials, including sand. How could you use this difference in physical properties to separate a mixture of iron filings and sand?
Q. 5. Research different types of colloids, examples, their dispersion medium and dispersion phase . Research & cite source.
Q. 6. Identify the following as homogeneous or heterogeneous mixture and explain why it is homo or heterogeneous mixture.
Q. 7. If you buy a can of paint at a paint store, a store employee may put the can on a shaker machine to mix up the paint in the can. Explain what type of mixture is the paint?
Q. 8. The milk you buy in the supermarket has gone through a process called homogenization. This process breaks up the cream in the milk into smaller particles. As a result, the cream doesn’t separate out of the milk no matter how long it sits on the shelf. Explain which type of mixture is homogenized milk?
Q.9. Suppose you have a mixture of salt and pepper. What properties of the salt and pepper might allow you to separate them? Explain.
Q.10. After you separate the pepper from the salt water, how could you separate the salt from the water? Explain the property.
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