Northern Star Online Matter Properties and Density Research Paper

Question Description

Matter Properties, Density, Density LAB 4, Physical, Chemical Change & Mixtures

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

  1. Define matter.
  2. Differentiate between gas and vapor.
  3. Define physical property and give four examples that you observe in everyday situations.
  4. Describe the three states of matter in terms of their shape, volume, and compressibility.
  5. Compare and contrast intensive and extensive properties. Give one example of each.

Part 2: Density Problems:

  1. Define and explain density.
  2. Are gases more or less dense that liquids or solids at room temperature? Explain
  3. How does temperature affect the density of a material?
  4. A certain liquid sample has a volume of 14.7 mL and a mass of 22.8 grams. Calculate the density. Show your work: known, unknown, formula and substitution in the formula and answer.
  5. A material with a density of 2.7 grams/mL occupies 35.6 mL. How many grams of the material are there? Show your work: known, unknown, formula and substitution in the formula and answer.
  6. A certain material has a density of 19.3 g/mL. Analyze and identify the material?

Part 3: Physical and Chemical Change:

1) Review and define the following:

  • Density
  • Physical Change
  • Chemical Change
  • Physical Properties
  • Chemical Properties
  • Extensive Properties
  • Intensive Properties

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.

  1. Macaroni and Cheese
  2. Sea Water
  3. Iced Tea
  4. Air
  5. Chocolate Chip Cookie
  6. Salad
  7. Mixture of Apple Juice and Grape Juice
  8. Hair Spray

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.

Prof. Angela

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