Levels of Structure

Question 1

What are ultramicroscopic building blocks of matter called?

Answer 1

ATOMS

Question 2

The number of protons and electrons in an atom are _______.

Answer 2

EQUAL

Question 3

Name the structure where two or more atoms share electrons to form a stable structure?

Answer 3

MOLECULES

Question 4

The association of molecules with one another is what makes up a ______.

Answer 4

CELL

Question 5

A substance which is made of different atoms is referred to as what?

Answer 5

COMPOUND

Question 6

A substance which is made of entirely the same atoms is referred to as what?

Answer 6

ELEMENT

Question 7

Name the 4 elements which make up 96% of the body’s mass?

Answer 7

OXYGEN
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HYDROGEN
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CARBON
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NITROGEN

Question 8

Name the substance which is an atom that has a positive or negative charge because it has an unequal number of protons and electrons?

Answer 8

ION

Question 9

Name the substance which is an electrically charged atom (or group of atoms) with an unpaired electron?

Answer 9

FREE RADICAL

Question 10

Name the smallest part of a molecule?

Answer 10

ATOM