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

2. Atoms and the Periodic Table

The Atom (Simplified)

GOB Chemistry

2. Atoms and the Periodic Table

The Atom (Simplified)

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1:39 minutes

Problem 24

Textbook Question

Sometimes clothes cling together when removed from a dryer. What kinds of charges are on the clothes?

Verified step by step guidance

Understand the concept of static electricity: When clothes are dried in a dryer, they rub against each other, causing electrons to transfer from one material to another. This process is called triboelectric charging.

Recognize that different materials have different tendencies to gain or lose electrons. Some materials become negatively charged by gaining electrons, while others become positively charged by losing electrons.

Identify that the clinging of clothes is due to opposite charges: Clothes with opposite charges (positive and negative) attract each other due to electrostatic forces.

Consider the role of the dryer environment: The tumbling motion and dry conditions in the dryer enhance the transfer of electrons between clothes, increasing the likelihood of static charge buildup.

Conclude that the charges on the clothes are either positive or negative, depending on the materials involved and the direction of electron transfer during the drying process.

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Key Concepts

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

Static Electricity

Static electricity is the accumulation of electric charge on the surface of objects. It occurs when materials are rubbed together, causing electrons to transfer from one material to another, leading to an imbalance of charges. This phenomenon is responsible for the attraction or repulsion between clothes when they are removed from the dryer.

Electrostatic Charges

Electrostatic charges can be either positive or negative, depending on whether an object has lost or gained electrons. In the context of laundry, clothes often acquire a negative charge due to friction in the dryer, causing them to repel or attract each other based on their respective charges. This interaction can lead to clothes clinging together.

Friction and Charge Transfer

Friction is a force that opposes motion between two surfaces in contact, and it plays a crucial role in charge transfer. When clothes rub against each other in the dryer, friction causes electrons to move, resulting in one fabric becoming positively charged and the other negatively charged. This charge imbalance is what leads to the clinging effect observed after drying.

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