Question

which statements best describe a composite material? select all correct answers. a composite may have more desirable properties than its components. composites all contain carbon, which makes them lightweight. composites form hydrogen bonds, which makes them stronger than their components. a brick made of mud and straw is an example of a composite; a brick made of mud is not.

Explanation:

• A composite material is a combination of two or more materials with different properties. The resulting material often has more desirable properties than the individual components. For example, a brick made of mud and straw (where straw reinforces the mud) is a composite, while a brick made of just mud is not.
• Not all composites contain carbon (e.g., some fiber - reinforced polymers without carbon). Also, composites do not form hydrogen bonds in the way described in the incorrect option. Hydrogen bonds are more relevant in some molecular - level bonding in pure substances or simple mixtures, not a general property of composites.

Answer:

A. A composite may have more desirable properties than its components.
D. A brick made of mud and straw is an example of a composite; a brick made of mud is not.