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 is an alkali metal?

An element in Group 1 of the periodic table.
The average distance between the sun and an object orbiting it.
A device used for measuring current.
The mass of an atom expressed in atomic mass units.

The correct answer is: An element in Group 1 of the periodic table.

An alkali metal is an element that belongs to Group 1 of the periodic table. This group includes elements such as lithium, sodium, and potassium. Option B refers to astronomical terms and has nothing to do with chemistry or elements. Option C and D refer to scientific measurements, but not to a specific type of element. Therefore, the correct answer is A.