Question

1. what is a compound?
2. circle the letter of each sentence that is true about compounds.

a. a compound always contains at least two elements.
b. the substances that make up a compound are always joined in a fixed proportion.
c. a compound has the same properties as the elements from which it is formed.
d. a compound can be broken down into simpler substances.
mixtures (pages 41 - 42)

1. why do the properties of a mixture vary?
2. a(n) ____________ mixture is a mixture whose parts are noticeably different from one another.
3. is the following sentence true or false? a homogeneous mixture is a mixture in which it is difficult to distinguish the substances from one another.

solutions, suspensions, and colloids (pages 42 - 44)

1. a mixture can be classified as a solution, a suspension, or a colloid based on the size of its ____________ particles.
2. circle the letter of the term that identifies the homogeneous mixture that forms when sugar is dissolved in a glass of hot water.

a. solution
b. suspension
c. colloid
d. substance

1. complete the table about solutions, suspensions, and colloids.

Explanation:

1. A compound is a substance formed when two or more elements are chemically combined in a fixed proportion.

11.

• a. True. By definition, a compound has at least two elements.
• b. True. The elements in a compound are in a fixed - ratio.
• c. False. Compounds have different properties from their constituent elements.
• d. True. Compounds can be broken down into simpler substances through chemical means.

1. The properties of a mixture vary because the proportions of its components can vary.
2. A heterogeneous mixture is a mixture whose parts are noticeably different from one another.
3. True. In a homogeneous mixture, the substances are uniformly distributed and it is difficult to distinguish them.
4. A mixture can be classified as a solution, a suspension, or a colloid based on the size of its dispersed particles.
5. When sugar is dissolved in hot water, it forms a solution. So the answer is a. solution.
6. (No table content provided, so unable to complete this part)

Answer:

1. A substance formed when two or more elements are chemically combined in a fixed proportion.
2. a. A compound always contains at least two elements.

b. The substances that make up a compound are always joined in a fixed proportion.
d. A compound can be broken down into simpler substances.

1. Because the proportions of its components can vary.
2. heterogeneous
3. True
4. dispersed
5. a. solution