Lesson 8 Study Guide

Question 1

Glucose and fructose both have an atomic composition of CH,20, but they are different molecules. What is most likely the major difference between them?

Answer 1

Glucose has a different group than fructose

Question 2

List 2 differences between crystals and polymers. Hint: one is shape and one is composition.

Answer 2

Polymer has long chains of molecules and crystals have less and they have a different ratio

Question 3

What is an element

Answer 3

A substance that cannot be broken down

Question 4

What is an atom?

Answer 4

The smallest unit of any chemical element

Question 5

What is a molecule

Answer 5

2 or more atoms held together with a chemical bond

Question 6

When making molecule models, what do the beads represent? The sticks?

Answer 6

The beads represent atoms and the sticks represent chemical bonds

Question 7

Can you have 2 different crystals that are made of the same atom?

Answer 7

Yes

Question 8

C4H3 has how many elements? Atoms?

Answer 8

2 elements, 7 atoms, ratio 3:4