Match the phrases with the correct groups.

To answer this question, we need to carefully read and analyze the given phrases and then match them with the appropriate groups based on their meaning or category. Let's go through each phrase one by one:

1. Solids that dissolve in water to form a solution.
2. Substances that cannot be broken down into simpler substances by chemical means.
3. Elements that have properties of both metals and nonmetals.
4. Substances that have a definite shape and volume.
5. Substances that can burn easily and are usually gases or liquids.
6. Substances that conduct electricity and are malleable.
7. Elements that have similar physical and chemical properties.
8. Substances that have no definite shape or volume.

Now, let's examine each group of phrases and categorize them accordingly:

Group 1: Solids that dissolve in water to form a solution.
- Phrase 1: Solids that dissolve in water to form a solution.

Group 2: Substances that cannot be broken down into simpler substances by chemical means.
- Phrase 2: Substances that cannot be broken down into simpler substances by chemical means.

Group 3: Elements that have properties of both metals and nonmetals.
- Phrase 3: Elements that have properties of both metals and nonmetals.

Group 4: Substances that have a definite shape and volume.
- Phrase 4: Substances that have a definite shape and volume.

Group 5: Substances that can burn easily and are usually gases or liquids.
- Phrase 5: Substances that can burn easily and are usually gases or liquids.

Group 6: Substances that conduct electricity and are malleable.
- Phrase 6: Substances that conduct electricity and are malleable.

Group 7: Elements that have similar physical and chemical properties.
- Phrase 7: Elements that have similar physical and chemical properties.

Group 8: Substances that have no definite shape or volume.
- Phrase 8: Substances that have no definite shape or volume.

Now that we have categorized each phrase into its respective group, here is the final matching:

1. Solids that dissolve in water to form a solution. - Group 1
2. Substances that cannot be broken down into simpler substances by chemical means. - Group 2
3. Elements that have properties of both metals and nonmetals. - Group 3
4. Substances that have a definite shape and volume. - Group 4
5. Substances that can burn easily and are usually gases or liquids. - Group 5
6. Substances that conduct electricity and are malleable. - Group 6
7. Elements that have similar physical and chemical properties. - Group 7
8. Substances that have no definite shape or volume. - Group 8

I hope this detailed explanation helps you understand how to match the phrases with the correct groups.