Question

which is true about the properties of compounds? they are different than the elements that make them. they are the same as the elements that make them. they are not observable.

Explanation:

Compounds have distinct properties from their constituent elements due to chemical bonding. For example, water (H₂O) is a liquid at room - temperature while hydrogen and oxygen are gases under the same conditions. Also, compounds' properties are observable through physical and chemical means.

Answer:

They are different than the elements that make them.