"Atomic Zoom In" Article Questions

What are diamonds made of?

• Oxygen atoms

• Hydrogen atoms

• Carbon atoms

• Nitrogen atoms

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Who was the first to propose that all matter is made of tiny pieces called atoms?

• Albert Einstein

• Isaac Newton

• John Dalton

• Marie Curie

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How many different types of atoms do scientists currently know of in the universe?

• 50

• 118

• 200

• 75

Why do substances have different properties?

• Because they are made of different colors

• Because they are made of different shapes

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

• Because they are made of different sizes

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What is the purpose of adding ethyl butyrate to packaged juice?

• To preserve the juice

• To make the juice taste like fresh-squeezed oranges

• To change the color of the juice

• To increase the shelf life of the juice

What is the chemical formula of ethyl butyrate?

• C₆H₁₂O₂

• C₅H₁₀O₂

• C₆H₁₀O₄

• C₇H₁₄O₂

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How does isovaleric acid differ from ethyl butyrate in terms of smell?

• Isovaleric acid smells like citrus

• Isovaleric acid smells like fresh flowers

• Isovaleric acid smells like sweaty gym socks

• Isovaleric acid has no smell

What is the chemical formula of isovaleric acid?

• C₆H₁₂O₂

• C₅H₁₀O₂

• C₆H₁₀O₄

• C₇H₁₄O₂

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What are diamonds made of at the atomic level?

• Zirconium and oxygen

• Carbon

• Oxygen and hydrogen

• Silicon

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What is the main difference between diamonds and cubic zirconia in terms of hardness?

• Cubic zirconia is harder than diamonds

• Diamonds are harder than cubic zirconia

• Both have the same hardness

• Cubic zirconia cannot be scratched