4.1 - Food & Nutrients

• Scheikunde
• Middelbare school
• havo
• Leerjaar 3

Food & Nutrients

Section 4.1

What are we gonna do this week?

During class:

Lesson 1: Lecture §4.1

Lesson 2: Lecture §4.2 and drawing structural formulas

Homework for the entire week:

Read §4.2

Make the worksheet about structural formulas

After this class you can...

• Explain why your body needs food
• Explain what the combustion of food is
• Explain what kind of nutrients your body needs

What comes to mind when
you think about food?

Food

• Food is burnt in your body
• Energy is used for all kinds of body functions
  
• Oxygen is needed for this process        You breathe in oxygen and breathe out the combustion products

Which combustion products are released during food combustion?

What kind of reaction is the combustion of food?

1. An endothermic reaction
2. An exothermic reaction

Nutrients

• Food contains nutrients      Water, carbohydrates, proteins, fats, minerals and vitamins are most important
• Not all foodstuffs contain all nutrients, so vary food
• Too much food       obesity
  
• Too little food        illness (i.e. scruvy)
  

Which nutrient do you think is the most important?

1. Water
2. Carbohydrates
3. Fats
4. Vitamins

Time to work!

• Start reading §4.2 to prepare for next class
• Done reading? Make the work sheet about structural formulas
  

Work in silence

You may talk quietly