Question

butter is a mixture of proteins and fats that does not separate out when left alone. what type of mixture is butter? a suspension b colloid c solution d compound

Explanation:

• A suspension has larger particles that settle out over time. Butter does not separate out when left alone, so it is not a suspension.
• A colloid has particles that do not separate out on their own. Butter fits this description as it is a mixture of proteins and fats that remains together.
• A solution has very small particles that are uniformly distributed at a molecular level. Butter's composition is more complex than a simple solution.
• A compound is a pure substance formed by chemical bonding of elements. Butter is a mixture, not a compound.

Answer:

B. colloid