Lesson 1.7: Substances vs. Mixtures
Автор: DocBee
Загружено: 2026-01-03
Просмотров: 71
Описание:
In this lesson, we explore the fundamental difference between pure substances and mixtures, focusing on how chemists classify matter based on composition and physical properties.
You’ll learn how to:
• Distinguish between substances and mixtures
• Compare homogeneous and heterogeneous mixtures
• Understand why mixtures have variable composition
• Explain how mixtures can be separated using physical processes
Several separation techniques are introduced and demonstrated, including:
• Filtration
• Distillation
• Crystallization
• Chromatography
Throughout the lesson, we emphasize an important theme in chemistry:
👉 Physical changes and physical separations do not alter chemical identity.
This video is part of Unit 1: Properties of Matter and builds the foundation for later topics such as phase changes, solutions, and chemical reactions.
Recommended prior knowledge:
✔ Metric system review
✔ Accuracy vs. precision
✔ Physical vs. chemical properties
Повторяем попытку...
Доступные форматы для скачивания:
Скачать видео
-
Информация по загрузке:
