Question

1. during a class - presentation, david used the diagrams below to explain the difference between an element and a compound.

a) which diagram represents:
i) an element?
ii) a compound?
b) give reasons for your answers in (a).

1. copy the table below in your exercise book. use the table to group the following as atom, element, molecule and compound. one has been done.

Explanation:

Step1: Recall definitions

An element is made of only one - type of atom. A compound is made of two or more different types of atoms chemically combined.

Step2: Analyze diagrams

In the first diagram, there are two different types of atoms (black and yellow) chemically bonded, so it is a compound. In the second diagram, all the atoms are the same (yellow), so it is an element.

Step3: Answer part (a)

• i. The second diagram represents an element.
• ii. The first diagram represents a compound.

Step4: Answer part (b)

The second diagram represents an element because all the atoms are identical. The first diagram represents a compound because it contains two different types of atoms chemically bonded together.

Answer:

a. i. The second diagram.
ii. The first diagram.
b. The second diagram represents an element as all atoms are identical. The first diagram represents a compound as it has two different types of atoms chemically bonded.