Week 24: 8th Grade Science

Week: 24

Topic: Life With Carbon

Students will be able to: 

List four main classes of organic compounds in living things.

Explain how the organic compounds in living things differ from one another.  

Essential Question:

What does food look like at the molecular level?

This week: The 8th graders this week are using their lab and chemistry skills to identify the three food groups.  In the experiment “Can’t Judge a Powder” students will be using their observation skills and different chemicals to see how different food groups react.  Example:  iodine turns starches black.  Then they will use these observation to test chemically carbohydrates, lipids, and proteins.  They will begin to see how sugars and starches both carbohydrates react differently.  

Key Terms:

carbohydrate

glucose

complex carbohydrates

starch 

protein

amino acid

lipid

fatty acid

hydroxyl & carboxyl group

isomer

Differentiated Instruction:

observing

developing hypotheses

inferring

interpreting

creating models 

classifying

Upcoming:

Our digestive system, and acids and bases