Question

modified true and false
if the statement is true, write true. if the statement is false, change the underlined word
or words to make the statement true.

1. the type of substance that cannot be broken down is a(n) compound.
2. the chemical symbol for oxygen is o.
3. molecules are formed as a result of physical bonds.
4. a pure mixture is a single kind of matter with a specific set of properties

Explanation:

• Question 10: A compound can be broken down into simpler substances (elements) by chemical means. An element is a substance that cannot be broken down further.
• Question 11: The chemical symbol for oxygen is indeed \(O\).
• Question 12: Molecules are formed as a result of chemical bonds (e.g., covalent, ionic bonds), not physical bonds. Physical bonds do not form molecules in the chemical sense.
• Question 13: A pure substance (not a mixture) is a single kind of matter with a specific set of properties. A mixture is made up of two or more different substances.

Answer:

1. False, element
2. True
3. False, chemical
4. False, substance