Amino Acids

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Slide 1: Tekstslide
ChemistrySecondary Education

In deze les zitten 15 slides, met interactieve quizzen en tekstslides.

Onderdelen in deze les

Slide 1 - Tekstslide

How are you feeling today?

Slide 2 - Poll

What two functional groups are present in amino acid?

Slide 3 - Open vraag

Learning Objective
  • describe, by drawing, the acid / base properties of amino acids and the formation of zwitterions, to include the isoelectric point

Slide 4 - Tekstslide

Slide 5 - Tekstslide

Amino acids 

Slide 6 - Tekstslide

Amino acids as zwitterions
  • an internal transfer of a hydrogen ion from the -COOH group to the -NH2 group makes a zwitterion

Slide 7 - Tekstslide

What charges are found in a zwitterion?
A and B

Slide 8 - Quizvraag

Zwitterions are ions.
  • amino acids exist in even in the solid state
  • If you dissolve the amino acid in water, a simple solution also contains this ion.
  • a compound with no overall electrical charge, but which contains separate parts which are positively and negatively charged.

Slide 9 - Tekstslide

What happens to the hydrogen ions if you increase the pH of a solution of an amino acid by adding hydroxide ions?
hydrogen ion is removed from -NH3+
hydrogen ion is added to the -NH3+ group

Slide 10 - Quizvraag

Do this!
Show the equation for this reaction. 

Slide 11 - Tekstslide

What does the -COO- part of the zwitterion do to the hydrogen ion if you decrease the pH by adding an acid to a solution of an amino acid?
The -COO- releases a hydrogen ion.
The -COO- picks up a hydrogen ion.

Slide 12 - Quizvraag

Do this!
Show the equation for this reaction. 

Slide 13 - Tekstslide

Activity 5
Work with your study partner. 

Slide 14 - Tekstslide

Rate your level of understanding of the lesson.

Slide 15 - Poll