Ontario Grade 9 Science Class Practice Exam

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Master Grade 9 Science with our comprehensive practice exam. Test your knowledge, identify weak areas, and boost your confidence for academic success.

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What defines a neutral object?

An object with more protons than electrons
An object that has more electrons than protons
An object that has an equal number of protons and electrons
A substance made up of at least two different types of particles

The correct answer is: An object that has an equal number of protons and electrons

A neutral object is one that has no overall charge, meaning it has an equal number of protons and electrons. Option A is incorrect because an object with more protons than electrons would have a positive charge. Option B is incorrect because an object with more electrons than protons would have a negative charge. Option D is incorrect because it describes a compound, not a single object.