Grade 7 Chemistry Worksheet: Atoms, Elements & Compounds
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Free printable Science worksheet on Atoms, Elements & Compounds for Grade 7. Includes questions and answer key.
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Grade 7 Chemistry Worksheet: Atoms, Elements & Compounds
Subject: GeneralGrade: General
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Grade 7 Chemistry Worksheet: Atoms, Elements & Compounds
Instructions: Read each question carefully and answer to the best of your ability. Make sure to review your answers before submitting.
A
Atoms and Elements
1.
What is the smallest particle of an element that retains the properties of that element?
[2 marks]2.
Which of the following is a chemical element?
[1 mark]AWater
BSalt
COxygen
DSugar
3.
Fill in the blank: The periodic table organizes elements based on their increasing _____ number.
[1 mark]4.
True or False: An atom is made up of protons, neutrons, and electrons.
[1 mark]B
Compounds and Molecules
1.
What is a substance made of two or more different elements chemically bonded together called?
[2 marks]2.
Which of the following is a compound?
[1 mark]AO₂
BNa
CH₂O
DGold
3.
Fill in the blank: Water is made up of two hydrogen atoms and one _____ atom.
[1 mark]4.
True or False: Molecules can be made of only one type of atom.
[1 mark]C
Atoms and Elements in Reactions
1.
In a chemical reaction, atoms are rearranged but not created or destroyed. What law is this?
[2 marks]2.
What is the atomic number of carbon?
[2 marks]3.
How many atoms are in one molecule of carbon dioxide (CO₂)?
[2 marks]4.
Data Analysis: The atomic number of an element is 11. How many protons and electrons does its atom have?
[2 marks]Analysis:
5.
True or False: All atoms of the same element have the same number of neutrons.
[1 mark]D
Periodic Table and Elements
1.
What is the main purpose of the periodic table?
[2 marks]2.
Which element has the symbol 'Na'?
[1 mark]ASodium
BNitrogen
CNeon
DNickel
3.
Fill in the blank: The element with atomic number 1 is _____.
[1 mark]4.
True or False: Elements in the same group of the periodic table have similar properties.
[1 mark]Quick Actions
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- Created
- 12/30/2025
- Updated
- 12/30/2025
- Type
- worksheet