Question

1. identify each of the following as an element, compound or mixture. a. iron b. distilled water c. laundry detergent d. sulfur e. chicken broth f. sodium fluoride

Explanation:

To solve this, we recall the definitions:

• Element: A pure substance made of only one type of atom.
• Compound: A pure substance made of two or more different atoms chemically bonded.
• Mixture: A combination of two or more substances (elements or compounds) that are not chemically bonded.

Part (a): Iron

Iron (Fe) is made of only iron atoms. By definition of an element, it is an element.

Part (b): Distilled Water

Distilled water is \( \ce{H_2O} \), containing hydrogen and oxygen atoms chemically bonded. This fits the definition of a compound.

Part (c): Laundry Detergent

Laundry detergent contains multiple substances (e.g., surfactants, enzymes, fragrances) mixed together, not chemically bonded. Thus, it is a mixture.

Part (d): Sulfur

Sulfur (S) consists of only sulfur atoms. By definition of an element, it is an element.

Part (e): Chicken Broth

Chicken broth contains water, proteins, fats, salts, etc., mixed together (not chemically bonded). Thus, it is a mixture.

Part (f): Sodium Fluoride

Sodium fluoride is \( \ce{NaF} \), with sodium and fluorine atoms chemically bonded. This fits the definition of a compound.

Answer:

s:
a. Element
b. Compound
c. Mixture
d. Element
e. Mixture
f. Compound