Explore Exams
Login Signup
Sign in Open App
CBSE Class 8  >  Class 8 Test  >  Year 8 Chemistry (Cambridge)  >  Test: Structure of an atom - Class 8 MCQ

Structure of an atom - Free MCQ Practice Test with solutions, Class 8 Year


MCQ Practice Test & Solutions: Test: Structure of an atom (10 Questions)

You can prepare effectively for Class 8 Year 8 Chemistry (Cambridge) with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: Structure of an atom". These 10 questions have been designed by the experts with the latest curriculum of Class 8 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 20 minutes
  • - Number of Questions: 10

Sign up on EduRev for free to attempt this test and track your preparation progress.

Test: Structure of an atom - Question 1
Save

The smallest part of an element that retains the identity (and the chemical properties) of that element is ...

Detailed Solution: Question 1

The idea of atoms has been around for thousands of years but it was only during the last two hundred years that scientists have found evidence they exist. In 1981, a very powerful microscope was developed that can be used to 'see' actual atoms

Test: Structure of an atom - Question 2
Save

Which elements are in SO2?

Detailed Solution: Question 2

If you did not know the answer, you could easily have looked up the chemical symbols to find out what elements they represent

Clear all your doubts with EduRev
Test: Structure of an atom - Question 3
Save

What is the correct symbol for Iron?

Detailed Solution: Question 3

A symbol MUST have ONE capital letter - no more, no less. That means the correct answer cannot be either options 2 or 3. Option 4 is tempting, but is the symbol for the metal iridium. But why use Fe for the symbol? The Latin word for iron is ferrum and quite a few symbols come from the Latin names for the elements. Iron is very common, so, if you didn't already know it, it should not be too long before you have to remember that Fe is the chemical symbol for iron

Test: Structure of an atom - Question 4
Save

What is the correct formula for H-H?

Detailed Solution: Question 4

This is a simple representation of a molecule of the element hydrogen. You know that it is an element because there is only one type of atom in the formula

Test: Structure of an atom - Question 5
Save

How many atoms of sulfur are there in CuSO4?

Detailed Solution: Question 5

There is no small number after the chemical symbol for sulfur therefore there is only one atom

Test: Structure of an atom - Question 6
Save

Which elements are in CoCO3?

Detailed Solution: Question 6

Counting the capital letters in the formula immediately tells you that answers 2 and 3 must be incorrect (there are 3 capitals so there must be three elements). It is then simply a case of looking up the symbols on the periodic table or in a list of elements

Test: Structure of an atom - Question 7
Save

Which subatomic particle is responsible for the positive charge of an atom's nucleus?

Detailed Solution: Question 7

Protons are positively charged particles found in the nucleus of an atom. They determine the atomic number of an element and contribute to its overall positive charge.

Test: Structure of an atom - Question 8
Save

Which of the following particles has negligible mass and is located outside the nucleus of an atom?

Detailed Solution: Question 8

Electrons are negatively charged particles with negligible mass compared to protons and neutrons. They orbit around the nucleus in energy levels or shells.

Test: Structure of an atom - Question 9
Save

Most of the elements in the periodic table are.....

Detailed Solution: Question 9

About three-quarters of all elements are metals

Test: Structure of an atom - Question 10
Save

The atomic number of an element is determined by the number of:

Detailed Solution: Question 10

The atomic number of an element represents the number of protons found in the nucleus of its atoms. It determines the element's identity and its position in the periodic table.

6 videos|14 docs|4 tests
Join Course
Information about Test: Structure of an atom Page
In this test you can find the Exam questions for Test: Structure of an atom solved & explained in the simplest way possible. Besides giving Questions and answers for Test: Structure of an atom, EduRev gives you an ample number of Online tests for practice
Download as PDF

About this Class 8 Practice Test

This test contains 10 MCQs on Structure of an atom with detailed solutions for each question. It is part of the Year 8 Chemistry (Cambridge) course on EduRev, designed to align with the current Class 8 syllabus. Each solution explains not just the correct answer but also gives you an understanding of the topic — not just to attempt the question but also help you prepare for the exam with practice.

Explore more Class 8 Study Resources

If you found this Structure of an atom MCQ Test helpful, you can further enhance your Class 8 preparation with in-depth courses on EduRev, for all the subjects and topics available in Year 8 Chemistry (Cambridge) course. The course offers:
  • Video Lectures: covering all the topics of Year 8 Chemistry (Cambridge)
  • Notes for Revision: offering revision notes, important questions, summaries, flashcards, cheatsheets & more for Class 8 preparation
  • MCQ Test: variety of questions as per the pattern of Class 8 exam
Signup on EduRev and stay on top of your study goals
10M+ students crushing their study goals daily