Question

choose the best answers.
5.1) __ a mixture is the of two or more types of matter where each type of m
still has most of its properties.
a. union b. compound c. physical property
5.2) ____ which of the following is not an example of a mixture?
a. salad c. sand
b. air d. water
5.3) ____ which statement is true regarding mixtures?
a. each type of matter loses its physical properties in a mixture.
b. some mixtures maintain the physical properties of their substances.
c. mixtures can only occur between different states of matter.
d. mixtures and compounds are the same thing.

Explanation:

• 5.1: A mixture is defined as the union of two or more types of matter where each retains its properties. A compound (B) is a chemical combination, and physical property (C) is a characteristic of matter, not a combination.
• 5.2: Water (D) is a compound (\(H_2O\)), while salad (A), air (B), and sand (C) are mixtures.
• 5.3: In a mixture, substances maintain their physical properties (C). A is false as properties aren't lost. B is incorrect as all mixtures maintain properties. D is wrong as mixtures and compounds are different (compounds are chemically combined).

Answer:

5.1) A. union
5.2) D. water
5.3) C. Mixtures maintain the physical properties of their substances.