Exploring Atoms, Elements & Compounds
Science
Year 8
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A worksheet covering Atoms, Elements & Compounds for Year 8 students.
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Exploring Atoms, Elements & Compounds
Subject: ScienceGrade: Year 8
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Untitled Worksheet
Grade Year 8
A
Introduction
Atoms are the building blocks of matter. Elements consist of only one type of atom, while compounds are made from two or more different elements that are chemically bonded. This worksheet will guide you through the basics of atoms, elements, and compounds.
B
Questions
Answer all questions. Show your working where appropriate.
1.
Which of the following is an element?
[1 mark]AWater
BSalt
COxygen
DCarbon Dioxide
2.
True or False: Atoms can be created or destroyed in a chemical reaction.
[1 mark]3.
What is the atomic number of Carbon?
[1 mark]4.
True or False: A compound is made up of two or more elements chemically bonded together.
[1 mark]5.
Explain the difference between an element and a compound.
[2 marks]6.
Match the following terms to their definitions:
[3 marks]1. Molecule
2. Ion
3. Compound
ATwo or more atoms bonded together
BA substance formed when two or more elements are chemically bonded
CAn atom or molecule with a net electric charge
7.
Arrange the following steps in the correct order to describe the formation of a compound from elements.
[2 marks]1
2
3
4
5
8.
Fill in the blank: A water molecule is composed of two hydrogen atoms and one _____ atom.
[1 mark]9.
Calculate the molar mass of water (H2O). Use the atomic masses: H = 1 g/mol, O = 16 g/mol.
[2 marks]10.
Describe the structure and properties of a compound formed from sodium and chlorine.
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Details
- Created
- 12/30/2025
- Updated
- 12/30/2025
- Type
- worksheet