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Stage 1
Answer 3 out of 4 questions correctly.
Though they are too small to see without a special microscope, atoms make up all of the substances around you.

Like all matter, atoms have mass and volume. But atoms are extremely small. A water droplet, like the one hanging from the tip of the leaf in this picture, contains more than a billion trillion atoms!
Which of the following statements is true?
Atoms make up every substance around you.
Atoms do not have mass.
Atoms can be seen with the naked eye.
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