Understanding Mixtures

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Questions and Answers

How can you visually differentiate between salt and white sand in a mixture?

Using a magnifying glass

What is a characteristic of a heterogeneous mixture involving fresh milk?

A layer of fat forms on its surface

What is an example of a heterogeneous mixture in the atmosphere on a cloudy day?

Clouds and air

How can you separate salt from white sugar in a mixture?

By dissolving in water; salt dissolves while sugar does not Signup and view all the answers

What law does the addition of 100g of salt to 100g of sand demonstrate?

Law of conservation of mass Signup and view all the answers

What is a mixture?

A mixture is two or more different substances that mix together while retaining each substance's original properties. Signup and view all the answers

Provide an example of a mixture.

A salad that contains tomatoes, cucumbers, and other vegetables. Signup and view all the answers

Can mixtures be separated into their components? If so, give an example.

Yes, mixtures can usually be separated into their components. For example, iron filings and sulfur can be separated using a magnet. Signup and view all the answers

What happens when iron and sulfur are mixed? Can they be separated?

When iron filings and sulfur are mixed, they retain their properties and can be separated. However, if heated, they can chemically combine to form iron sulfide. Signup and view all the answers

What is the difference between a mixture and a compound?

In a mixture, substances retain their original properties and can be separated. In a compound, substances chemically combine to form new properties. Signup and view all the answers

What is an external unexpanded mixture?

An external unexpanded mixture is a mixture that is not imported or a mixture that contains materials that can be distinguished from each other. Signup and view all the answers