Atom

What question did ancient philosophers ponder regarding elements?

• Can elements be created from nothing?

• Can elements be broken down indefinitely?

• Are elements composed of different types of matter?

• Do elements change properties when heated?

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• Yes

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What does the word "atom" literally mean?

• Smallest particle

• Building block

• Uncuttable

• Invisible unit

Which statement best describes an atom?

• It is the largest particle of an element.

• It is the smallest piece of an element that retains all its properties.

• It is a visible particle that can be broken down further.

• It is a combination of different elements.

Approximately how many gold atoms are estimated to be in a typical gold ring?

• Millions

• Billions

• Trillions

• Sextillions