8th Grade Science Quizzes , Questions & Answers

Recent Science Quizzes

This assessment focuses on understanding variables and data types in experiments. It evaluates your grasp of dependent and independent variables, the importance of controlled variables, and the distinction between qualitative and...

Questions: 8 | Attempts: 13 | Last updated: Oct 16, 2026

Sample Question
What is the dependent variable in an experiment?

The variable the experimenter changes

The variable the experimenter measures or observes to get the outcome

The variable that stays constant throughout the experiment

The variable that is chosen before the experiment begins

Scientific Method Unit Test Review

This assessment focuses on the Scientific Method, evaluating your understanding of its steps, key concepts like hypotheses and variables, and the difference between scientific laws and theories. It's relevant for mastering...

Questions: 8 | Attempts: 10 | Last updated: Oct 15, 2026

Sample Question
Which of the following correctly describes the order of steps in the Scientific Method?

Hypothesis → Question → Experiment → Data → Conclusion

Question → Hypothesis → Experiment → Data → Conclusion

Experiment → Question → Hypothesis → Data → Conclusion

Data → Question → Hypothesis → Experiment → Conclusion

History of the Atomic Model

This assessment focuses on the history of the atomic model, evaluating your understanding of key concepts from Democritus to Schr\u00f6dinger. It covers the evolution of atomic theory, including the ideas of Dalton, Thomson,...

Questions: 8 | Attempts: 10 | Last updated: Oct 15, 2026

Sample Question
Who first suggested that matter is made of tiny indivisible particles called atoms?

John Dalton

Democritus

J.J. Thomson

Niels Bohr

Does a Chemical Reaction Destroy Matter?

This quiz explores the concept of matter in chemical reactions, focusing on how atoms interact and the Principle of Conservation of Matter. It evaluates understanding of key ideas like mass measurement of reactants and products,...

Questions: 8 | Attempts: 11 | Last updated: Oct 12, 2026

Sample Question
What happens to atoms during a chemical reaction?

Atoms are destroyed and lost

Atoms change the way they are linked together

Atoms multiply and create new atoms

Atoms disappear and turn into energy

Life Science & Natural Resources

This assessment explores key concepts in life science, focusing on natural resources, ecosystems, and human health. It evaluates your understanding of renewable resources, soil conservation, wildlife preservation, and the human...

Questions: 30 | Attempts: 10 | Last updated: Oct 11, 2026

Sample Question
Which of the following is an example of a renewable natural resource?

Coal

Petroleum

Forests

Natural gas

Matter, Elements & the Periodic Table

This assessment focuses on matter, elements, and the periodic table. It evaluates your understanding of key concepts such as the definition of matter, properties of pure substances, and the organization of elements. This...

Questions: 25 | Attempts: 10 | Last updated: Oct 8, 2026

Sample Question
What is matter?

Anything that has color and texture

Anything that has mass and takes up space

Anything that can be seen with the naked eye

Anything that can be dissolved in water

Physical and Chemical Changes in Matter

This assessment focuses on understanding physical and chemical changes in matter. It evaluates key concepts such as distinguishing between physical and chemical changes, identifying evidence of chemical reactions, and applying...

Questions: 8 | Attempts: 11 | Last updated: Oct 8, 2026

Sample Question
What is a physical change?

A change that alters the chemical composition of a substance

A change that alters the form or appearance of a substance without changing its chemical composition

A change that produces a new substance with different properties

A change that releases energy in the form of heat

Periodic Table of Elements Overview

This resource provides an overview of the periodic table, assessing knowledge about element organization, properties, and classifications. It covers key concepts such as groups, periods, and the characteristics of metals,...

Questions: 30 | Attempts: 15 | Last updated: Oct 8, 2026

Sample Question
What is the periodic table?

A chart that organizes all known chemical elements

A list of compounds and their properties

A table showing only metals and nonmetals

A chart that organizes elements by their color

Pure Substances Elements and Compounds

This assessment focuses on pure substances, elements, and compounds, evaluating your understanding of their definitions, properties, and transformations. It is essential for grasping foundational concepts in chemistry, helping...

Questions: 25 | Attempts: 10 | Last updated: Oct 8, 2026

Sample Question
What is matter?

Anything that has mass and takes up space

Anything that has color and texture

Anything that can be seen and touched

Anything that has weight and color

Matter Properties Changes and Mixtures

This assessment evaluates your understanding of matter properties, changes, and mixtures. Key concepts include density calculations, particle arrangements, and distinguishing between physical and chemical changes. By mastering...

Questions: 15 | Attempts: 10 | Last updated: Oct 7, 2026

Sample Question
A student measures the volume of an irregular solid by placing it in a graduated cylinder containing 25.0 mL of water. The water level rises to 38.5 mL. The mass of the solid is 40.5 g. What is the density of the solid?

3.00 g/mL

1.05 g/mL

2.96 g/mL

1.55 g/mL

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