1. Matter and Measurements4h 29m
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 35m
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. Amines38m
18. Amino Acids and Proteins1h 51m
19. Enzymes1h 37m
20. Carbohydrates1h 46m
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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1:57 minutes

Problem 42McMurry - 8th Edition

Textbook Question

Which of these terms, (i) mixture, (ii) solid, (iii) liquid, (iv) gas, (v) chemical element, (vi) chemical compound, applies to the following substances at room temperature? a. Gasoline b. Iodine c. Water d. Air e. Blood f. Sodium bicarbonate g. Gaseous ammonia h. Silicon

Verified step by step guidance

Identify the physical state of each substance at room temperature (solid, liquid, or gas).

Determine if the substance is a pure chemical element or a chemical compound.

For each substance, decide if it is a mixture based on its composition.

Classify each substance using the appropriate terms: mixture, solid, liquid, gas, chemical element, or chemical compound.

Apply the classifications to each substance: a. Gasoline, b. Iodine, c. Water, d. Air, e. Blood, f. Sodium bicarbonate, g. Gaseous ammonia, h. Silicon.

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Key Concepts

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

States of Matter

The states of matter refer to the distinct forms that different phases of matter take on. The primary states are solid, liquid, and gas, each characterized by unique properties such as shape, volume, and particle arrangement. Understanding these states is crucial for classifying substances like water (liquid) and iodine (solid) at room temperature.

Mixtures vs. Pure Substances

Mixtures consist of two or more substances that are physically combined, while pure substances have a uniform and definite composition. For example, air is a mixture of gases, whereas sodium bicarbonate is a pure chemical compound. Recognizing the difference helps in identifying substances like blood (a complex mixture) and gasoline (a mixture of hydrocarbons).

Chemical Elements and Compounds

Chemical elements are pure substances that cannot be broken down into simpler substances, while chemical compounds are formed when two or more elements chemically bond together. For instance, sodium bicarbonate is a compound made from sodium, hydrogen, carbon, and oxygen, whereas silicon is a chemical element. This distinction is essential for classifying substances like gaseous ammonia (a compound) and iodine (an element).