Hỗn hợp các chất

Multiple Choice

Why is it important to distinguish between pure substances and mixtures in everyday life?

• It helps us understand the properties and uses of materials around us.

• It makes cooking easier.

• It helps us avoid drinking water.

• It is only useful for scientists.

Open Ended

Explain how you can identify whether a sample is a pure substance or a mixture using observations and examples from daily life.

Fill in the Blank

When you add salt to water, the salt acts as the ___ in the solution.

Multiple Select

Which of the following statements about solutions (dung dịch) is correct? Select all that apply.

• A solution is a homogeneous mixture.

• A solution always contains only one substance.

• A solution consists of a solute and a solvent.

• A solution can be separated by filtration.