Question

A pure substance has a/an _______ composition.

Answer 1

Answer:

1. A pure substance has a  definite constant composition.

2. A compound is composed of two or more types of matter that can be present in varying amounts.

3. A solution is a homogeneous mixture.

4. A mixture that is not uniform throughout is a Heterogeneous mixture

5. A pure substance that cannot be broken down chemically is a element.

6. A characteristic of matter that’s not associated with a change in its chemical composition is known as a physical property.

7. Wax melting is an example of a physical change in the state of matter.

8. A banana peel turning brown is an example of a chemical change in the state of matter.

Answer 2

Answer:

constant

mixture

homogeneous

heterogeneous

element

physical

physical

chemical

Explanation:

A good answer should contain the following:

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