An atom is the largest building block that a substance can be broken down to.

Choose 1 answer

True

False

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How many known elements are there currently in the periodic table?

Choose 1 answer

108

128

118

218

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Sodium Chloride is...

Choose 1 answer

Commonly known as table salt and is toxic.

Commonly known as sugar and is not toxic.

Commonly known as table salt and is dangerous.

Commonly known as table salt and is not toxic.

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Answer incorrect

Look at the slide below to work out the answer.