Question

A molecule of chlorine has atoms of the same element, and a molecule of carbon dioxide has different kinds of atoms, chlorine is A. change of state B compound C an element a D mixture and carbon dioxide is A. change of state B compound C element D mixture .

Answer 1

Answer;

Chlorine is an element while carbon (iv) oxide is a compound.

Explanation;

-An element is a pure substances that is made up of similar types of atoms. Elements unlike compounds can not be divided into simpler forms using chemical means. Examples of elements include; potassium, chlorine, helium, sodium, etc.

-Compounds on other hand are substances that contain more than one atom from different element that are combined together chemically. The atoms in a compound are in a fixed ratio. Compounds can be divided into simpler forms using chemical means. Example of compounds include; carbon (iv) oxide, water, etc.

Answer 2

Answer:

The correct answer for chlorine is Option C.

The correct option for carbon dioxide is Option B.

Explanation:

Element is defined as a chemical substance which cannot be broken down into simpler substances by any chemical means.

Compounds are defined as a chemical substance which can be broken down into simpler substances by chemical means. It is made up from two or more different elements.

Mixture is defined as the substance which is made by the combination of two or more different materials in such a way that no chemical reaction occurs.

From the above information:

Chlorine is an element because it is the simplest substance. Hence, the correct option for this is Option C.

Carbon dioxide is defined as the compound because it is made from two elements and can be broken down into simpler substances. Hence, the correct option for this is Option B.