Types of Mixtures

The video tutorial explains different types of mixtures, focusing on granite as an example of a heterogeneous mixture. It describes how heterogeneous mixtures like concrete and salad dressing differ from homogeneous mixtures like toothpaste and grape juice. The video also covers colloids, which are mixtures with suspended particles that scatter light, and suspensions, where larger particles can settle out over time. Examples include river water and certain medicines that require shaking before use.

What type of pattern do the minerals in granite form?

• Regular pattern

• Linear pattern

• Circular pattern

• Irregular pattern

Which of the following is an example of a homogeneous mixture?

• Oil and vinegar salad dressing

• Toothpaste

• Concrete

• Granite

What is a characteristic of colloids?

• Particles are dissolved

• Particles settle out quickly

• Particles are suspended and scatter light

• Particles are large and visible

What happens to the particles in a suspension over time?

• They evaporate

• They dissolve completely

• They remain suspended indefinitely

• They settle to the bottom

Why is it important to shake certain medicines before use?

• To mix the flavors

• To resuspend settled particles

• To cool the medicine

• To activate the ingredients