Classification of Matter

Matter

There are many ways that matter can be classified. The most common way is to look at certain properties of the matter and organize based on grouping those properties.

Matter- anything that has mass and takes up space.

Classifying matter - be sure you understand each of these terms and can identify a sample of material with one of these categories.

• Heterogeneous mixtures are not well mixed.
• Homogeneous mixtures are well mixed.
• Substances cannot be separated by physical methods.
• Compounds are made up of two or more elements that are chemically combined.

Answer the following questions using complete, concise sentences. This will be turned in with this packet's checkpoint document.

1. Describe how mixtures are different than pure substances.
2. How are homogeneous and heterogeneous mixtures similar? How are they different?
3. Give three examples of a compound. Give three examples of an element. How are they related?

More information can be found in Section 1.2.

Watch the following video and take notes as necessary.

Physical and Chemical Properties

View this video and take notes as necessary.

Physical and Chemical Changes

1. Describe what is meant by an irreversible change. Besides the examples given in the reading, what are two irreversible changes you have experienced?
2. What might be another word science uses for interatomic forces?
3. Strengthwise, how do these types of forces compare to intermolecular forces?
4. What is more energetic, physical or chemical changes? How do you know this?
5. Think about a typical meal in your home. Give several examples of physical and chemical changes that occur as the food is prepared. Be specific and give your reasoning.