Skills 3 & 4 -
Hands-on activities
Cookie cutter challenge (class activity)
Cookie cutter challenge (class activity)
Reusable hand warmer demonstration (class activity)
Reusable hand warmer demonstration (class activity)
Skill 3: Explain the specific, unchanging, and reusable nature of enzymes.
Skill 3: Explain the specific, unchanging, and reusable nature of enzymes.
Do this!
Do this!
Find the "Enzymes hands-on activities" paper in your unit packet*.
Find the "Enzymes hands-on activities" paper in your unit packet*.
Complete the activities in a group of no more than 3.
Complete the activities in a group of no more than 3.
Check your answers when finished and ask any questions you have.
Check your answers when finished and ask any questions you have.
(*The unit packet is found on the main page of the enzymes website.)
(*The unit packet is found on the main page of the enzymes website.)
Click here to watch a sample claymation video. Now, go make yours in a group of no more than three people!
Click here to watch a sample claymation video. Now, go make yours in a group of no more than three people!
Choices for this activity
Choices for this activity
1. You may make a Claymation using PlayDoh.
1. You may make a Claymation using PlayDoh.
2. You may use a foam craft shape (ask me) to make a stop motion animation.
2. You may use a foam craft shape (ask me) to make a stop motion animation.
3. Use a white board to create a stop motion animation.
3. Use a white board to create a stop motion animation.
4. Come up with your own idea.
4. Come up with your own idea.
1. Decide whether you will create a synthesis or decomposition reaction.
1. Decide whether you will create a synthesis or decomposition reaction.
2. Arrange your pieces separately and take a picture with your phone to show the reactants.
2. Arrange your pieces separately and take a picture with your phone to show the reactants.
3. Gradually move them together, taking pictures as you move the pieces.
3. Gradually move them together, taking pictures as you move the pieces.
4. Take a picture of the enzyme-substrate complex.
4. Take a picture of the enzyme-substrate complex.
5. Move the product(s) out of the active site of the enzyme.
5. Move the product(s) out of the active site of the enzyme.
6. Take a final picture.
6. Take a final picture.
You must show and label the following parts:
You must show and label the following parts:
your enzyme
your enzyme
your substrate(s)
your substrate(s)
your enzyme-substrate complex
your enzyme-substrate complex
your product(s)
your product(s)
Sign up on the board so I can come see your animation. Keep working while you wait.
Sign up on the board so I can come see your animation. Keep working while you wait.
Be sure each person on your team can point out the following parts in your animation:
Be sure each person on your team can point out the following parts in your animation:
Reactants - Enzyme - Products - Substrate - Active site - Enzyme-substrate complex
Reactants - Enzyme - Products - Substrate - Active site - Enzyme-substrate complex
Skill 4: Differentiate between endothermic and exothermic reactions.
Skill 4: Differentiate between endothermic and exothermic reactions.
Endothermic vs Exothermic
Endothermic vs Exothermic
Let's do some word decoding. What do the following roots and prefixes mean?
Let's do some word decoding. What do the following roots and prefixes mean?
Exo (as in exit or exoskeleton) -
Exo (as in exit or exoskeleton) -
Endo (an endoscope is a camera that doctors put down your throat so they can look inside your stomach) -
Endo (an endoscope is a camera that doctors put down your throat so they can look inside your stomach) -
Thermic (as in thermometer) -
Thermic (as in thermometer) -
Reactions either take in heat or release it. Which one is endothermic? Which is exothermic?
Reactions either take in heat or release it. Which one is endothermic? Which is exothermic?
Make a list of 3 things which are endothermic and 3 which are exothermic. Think about whether they feel hot (put off heat) or cold (take in heat).
Make a list of 3 things which are endothermic and 3 which are exothermic. Think about whether they feel hot (put off heat) or cold (take in heat).
Most chemical reactions involve both making and breaking of bonds, but each reaction will do more of one than the other. If a reaction primarily makes bonds, it will store energy from it's surroundings, making it endothermic. If a reaction primarily breaks bonds, it will release energy to it's surroundings, making it exothermic.
Most chemical reactions involve both making and breaking of bonds, but each reaction will do more of one than the other. If a reaction primarily makes bonds, it will store energy from it's surroundings, making it endothermic. If a reaction primarily breaks bonds, it will release energy to it's surroundings, making it exothermic.
Click here to watch a video experiment on hot ice. This will explain how the reusable heat pack works.
Click here to watch a video experiment on hot ice. This will explain how the reusable heat pack works.