Table of contents

1. Matter and Measurements4h 31m
2. Atoms and the Periodic Table5h 23m
3. Ionic Compounds2h 18m
4. Molecular Compounds2h 18m
5. Classification & Balancing of Chemical Reactions3h 17m
6. Chemical Reactions & Quantities2h 27m
7. Energy, Rate and Equilibrium3h 46m
8. Gases, Liquids and Solids3h 25m
9. Solutions4h 10m
10. Acids and Bases3h 29m
11. Nuclear Chemistry56m
BONUS: Lab Techniques and Procedures1h 38m
BONUS: Mathematical Operations and Functions47m
12. Introduction to Organic Chemistry1h 34m
13. Alkenes, Alkynes, and Aromatic Compounds2h 12m
14. Compounds with Oxygen or Sulfur1h 6m
15. Aldehydes and Ketones1h 1m
16. Carboxylic Acids and Their Derivatives1h 11m
17. Amines39m
18. Amino Acids and Proteins1h 51m
19. Enzymes1h 37m
20. Carbohydrates1h 41m
21. The Generation of Biochemical Energy2h 8m
22. Carbohydrate Metabolism2h 22m
23. Lipids2h 26m
24. Lipid Metabolism1h 45m
25. Protein and Amino Acid Metabolism1h 37m
26. Nucleic Acids and Protein Synthesis2h 54m

1. Matter and Measurements

Classification of Matter

GOB Chemistry

1. Matter and Measurements

Classification of Matter

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0:42 minutes

Problem 5b

Textbook Question

Daniel suggests that Charle include one of the following mixtures in his diet. Classify each of the following as homogeneous or heterogeneous: b. tea

Verified step by step guidance

Step 1: Understand the definitions of homogeneous and heterogeneous mixtures. A homogeneous mixture has a uniform composition throughout, meaning its components are evenly distributed and indistinguishable. A heterogeneous mixture has a non-uniform composition, where the components are visibly distinct or unevenly distributed.

Step 2: Consider the example provided: tea. Think about whether tea has a uniform composition or if it contains visibly distinct components.

Step 3: If the tea is plain and well-mixed (e.g., brewed tea without any added solids like lemon slices or sugar that hasn't dissolved), it is likely a homogeneous mixture because the liquid appears uniform throughout.

Step 4: If the tea contains undissolved solids or visible components (e.g., tea leaves floating in the liquid or added ingredients like fruit pieces), it would be classified as a heterogeneous mixture due to the non-uniform composition.

Step 5: Based on the specific type of tea being referred to, classify it as either homogeneous or heterogeneous using the criteria outlined above.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Homogeneous Mixtures

Homogeneous mixtures are uniform in composition and appearance, meaning that the individual components are not distinguishable. An example is saltwater, where the salt is completely dissolved, creating a consistent solution. In such mixtures, any sample taken will have the same composition as any other sample.

Heterogeneous Mixtures

Heterogeneous mixtures consist of visibly different substances or phases. The components can often be separated by physical means, and their proportions can vary throughout the mixture. An example is a salad, where you can see and identify the individual ingredients like lettuce, tomatoes, and cucumbers.

Classification of Mixtures

The classification of mixtures into homogeneous and heterogeneous is essential for understanding their properties and behaviors. This classification helps in various fields, including chemistry and nutrition, as it influences how substances interact and how they can be processed or consumed. Recognizing the type of mixture can also affect dietary choices and health implications.

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Related Practice

Textbook Question

Classify each of the following as an element, a compound, or a mixture:

b. a salad dressing of oil and vinegar

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Textbook Question

Classify each of the following mixtures as homogeneous or heterogeneous:

c. vegetable oil

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Textbook Question

Classify each of the following mixtures as homogeneous or heterogeneous:

b. herbal tea

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Textbook Question

A white solid with a melting point of 730 °C is melted. When electricity is passed through the resultant liquid, a brown gas and a molten metal are produced. Neither the metal nor the gas can be broken down into anything simpler by chemical means. Classify each—the white solid, the molten metal, and the brown gas—as a mixture, a compound, or an element.

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Multiple Choice

Which of the following statements is true?

Choose the homogeneous mixture from the list below.

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