Practice Atom in Chemistry

Use these practice problems to test your method after reviewing the concept explanation and worked examples.

Quick Recap

The smallest unit of an element that retains the chemical properties of that element.

The tiny building blocks everything is made of. Break matter down far enough, you get atoms.

Example 1

easy
Describe the basic structure of an atom and identify the three subatomic particles along with their charges.

Example 2

medium
A carbon atom has 6 protons, 6 neutrons, and 6 electrons. Calculate the approximate mass of this atom in atomic mass units (amu), given that protons and neutrons each have a mass of approximately 1 amu and electrons have negligible mass.

Example 3

easy
If an atom has 8 protons, 8 neutrons, and 8 electrons, what element is it and what is its overall charge?

Example 4

easy
If you keep dividing a piece of copper into smaller and smaller pieces, what is the smallest unit that still retains copper's chemical properties?
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