Question

question 13 not yet answered marked out of 1.00 flag question is trix cereal an element, a heterogeneous mixture, a compound, or a homogeneous mixture? select one: a. element. b. heterogeneous mixture. c. compound. d. homogeneous mixture. question 14 not yet answered marked out of 1.00 flag question is potassium an element, a heterogeneous mixture, a compound, or a homogeneous mixture? select one: a. element. b. heterogeneous mixture. c. compound. d. homogeneous mixture. question 15 not yet answered marked out of 1.00 flag question is dissolving salt a physical or chemical change? select one: a. physical b. chemical

Explanation:

Question 13:

Trix cereal is a mixture of distinct components (colored cereal pieces, added sugars, etc.) that are visibly separable, fitting the definition of a heterogeneous mixture.

Question 14:

Potassium is a pure substance made up of only one type of atom, which is the definition of an element, found on the periodic table (symbol K).

Question 15:

Dissolving salt in water only disperses the salt ions; no new substance is formed, and the salt can be recovered by evaporation, so this is a physical change.

Answer:

Question 13: b. Heterogeneous mixture.
Question 14: a. Element.
Question 15: a. Physical