Article: Atom Zoom In

Who was the first to propose the idea that all matter is made of atoms?

• Albert Einstein

• Marie Curie

• Isaac Newton

• John Dalton

What does a scientific theory represent?

• A hypothesis yet to be tested

• A proven fact without any doubt

• An idea with a lot of supporting evidence

• A guess without evidence

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How many different types of atoms are currently known?

• 200

• 118

• 50

• 89

What is the chemical formula of ethyl butyrate?

• C4H8O2

• C6H12O2

• C5H10O2

• C7H14O2

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What aroma is added to many brands of orange juice?

• Pineapple

• Lemon

• Isovaleric acid

• Ethyl butyrate

What does isovaleric acid smell like?

• Fresh linen

• Citrus

• Sweaty gym socks

• Pineapple

What is the chemical formula of diamond?

• SiO2

• C6H12O2

• ZrO2

• C

What makes cubic zirconia different from diamond?

• It is made of carbon atoms

• It has a higher melting point

• It can be scratched more easily

• It is harder than diamond

What is the chemical formula of cubic zirconia?

• ZrO2

• C6H12O2

• SiO2

• C

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Why do substances have different properties?

• Because they are made of different types and numbers of atoms

• Because of their state at room temperature

• Because of their color

• Because of their smell

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