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5.1 What are atoms, elements and compounds?

5.1 What are atoms, elements and compounds?

Assessment

Flashcard

Science

9th Grade

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

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14 questions

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1.

FLASHCARD QUESTION

Front

What is the Greek word from which 'atom' is derived, and what does it mean?

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Back

atomos, meaning 'indivisible' or 'uncuttable'

2.

FLASHCARD QUESTION

Front

What percentage of all the atoms in the universe come from the two lightest elements?

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Back

More than 98%

3.

FLASHCARD QUESTION

Front

What happens at the end of a large star's lifecycle that contributes to the creation of heavier elements?

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Back

It undergoes a massive explosion called a supernova.

4.

FLASHCARD QUESTION

Front

What discovery allowed scientists to view images of different atoms that had previously been unseen?

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Back

The development of the scanning tunnelling microscope

5.

FLASHCARD QUESTION

Front

What would happen if you cut an atom of silver in half?

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Back

You would no longer be in possession of the element silver

6.

FLASHCARD QUESTION

Front

What are elements considered to be?

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Back

Pure substances.

7.

FLASHCARD QUESTION

Front

What is the name of the microscope that allowed scientists to view the first image of an atom?

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Back

Scanning tunnelling microscope.

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