Q17E - Chemistry (OpenStax)

Question

Classify each of the following as an element, a compound, or a mixture:

1. Iron
2. Oxygen
3. Mercury oxide
4. Pancake syrup
5. Carbon dioxide
6. a substance composed of molecules each of which contains one hydrogen atom and one chlorine atom
7. baking soda.

Step-by-Step Solution

Answer

1. element 
2. element
3. compound
4. mixture
5. compound
6. compound
7. compound

Step 1: Defining the element, compound, and mixture

An element is a pure substance that cannot be broken into simpler substances by chemical reaction.

A compound is defined as a substance divided into atoms, molecules, or ions by any chemical process.

While a mixture is a combination of two or more substances which can be separated by physical process.

Step 2: Classifying the above components into the elements, compounds, or mixture

1. Iron is an element.
2. Oxygen is an element.
3. Mercury oxide is a compound.
4. Pancake syrup is a mixture.
5. Carbon dioxide is a compound.
6. A substance composed of molecules, each containing one hydrogen atom and one chlorine atom, is a compound.
7. Baking soda is a compound.