Ontario Grade 9 Science Class Practice Exam

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Prepare for the Ontario Grade 9 Science Class Exam. Engage with interactive questions and detailed explanations to solidify your knowledge. Enhance your understanding of essential science concepts and boost your confidence for the test!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What is a neutron?

A negatively charged particle in the atom's nucleus
A positively charged particle outside the atom's nucleus
A neutral particle in the atom's nucleus
A molecule made up of two or more atoms

The correct answer is: A neutral particle in the atom's nucleus

A neutron is a subatomic particle found in the nucleus of an atom. It has no net electric charge, therefore it is neutral. Option A cannot be correct because electrons are the negatively charged particles in an atom, not neutrons. Option B cannot be correct because protons are the positively charged particles in an atom, not neutrons. Option D is incorrect because molecules are made up of multiple atoms, not individual particles within an atom's nucleus.