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Biology 1 Professor Pam Thomas > Chapter 4 Chemical Context of Life Materials > Flashcards

Chapter 4 Chemical Context of Life Materials Flashcards

1
Q

What is matter?

A

Any substance that occupies space/has mass

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2
Q

How many elements are there? How many are naturally occurring?

A

There are 118 elements. only 98 are naturally occurring because the others are too unstable and require scientists to synthesize them

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3
Q

What is the atmosphere made up of? What percentage of each element is there?

A

78% Nitrogen, 21% Oxygen, trace Carbon, trace Hydrogen

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Biology 1 Professor Pam Thomas (10 decks)

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