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Skill 3: Explain the specific, unchanging, and reusable nature of enzymes.
Skill 3: Explain the specific, unchanging, and reusable nature of enzymes.
(Copy Skill #3 into your notebook and leave the page blank. After we complete each activity, go back to your notes and write a summary of the activity, explaining how it is an analogy for enzymes.)
(Copy Skill #3 into your notebook and leave the page blank. After we complete each activity, go back to your notes and write a summary of the activity, explaining how it is an analogy for enzymes.)
Class Activity
Write a summary paragraph about why I showed you the two candles, one of which had been melted. Explain how that relates to enzymes.
Write a summary paragraph about why I showed you the two candles, one of which had been melted. Explain how that relates to enzymes.
Write a summary paragraph about the "cookie cutter challenge." Explain how that relates to enzymes.
Write a summary paragraph about the "cookie cutter challenge." Explain how that relates to enzymes.
Write a summary paragraph about the shape sorter demo. Explain how that relates to enzymes.
Write a summary paragraph about the shape sorter demo. Explain how that relates to enzymes.
Write a summary paragraph about the "fire starter challenge." Explain how that relates to enzymes.
Write a summary paragraph about the "fire starter challenge." Explain how that relates to enzymes.
Stop motion video
Stop motion video
Choices for this activity
Choices for this activity
Use Play Doh, a foam craft shape, or a whiteboard to make a stop motion animation.
Use Play Doh, a foam craft shape, or a whiteboard to make a stop motion animation.
Do not include labels in your animation.
Do not include labels in your animation.
1. Decide if you will create a synthesis or decomposition reaction.
1. Decide if you will create a synthesis or decomposition reaction.
2. Arrange your pieces separately and take a picture to show the reactants.
2. Arrange your pieces separately and take a picture to show the reactants.
3. Gradually move them together, taking several pictures along the way.
3. Gradually move them together, taking several pictures along the way.
4. Take a picture of the enzyme-substrate complex.
4. Take a picture of the enzyme-substrate complex.
5. Gradually move the product(s) out of the active site of the enzyme, taking several more pictures.
5. Gradually move the product(s) out of the active site of the enzyme, taking several more pictures.
6. Take a final picture when your reaction is complete.
6. Take a final picture when your reaction is complete.
Sign up on the board to show me your animation. Keep working while you wait.
Sign up on the board to show me 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
Summary:
Summary:
In your notebook, write a summary paragraph for skill 3. (You might want to wait until after we have finished all of the activities listed on this page.)
In your notebook, write a summary paragraph for skill 3. (You might want to wait until after we have finished all of the activities listed on this page.)
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? If you already know the meaning, you do not have to look it up.
Let's do some word decoding. What do the following roots and prefixes mean? If you already know the meaning, you do not have to look it up.
Ex or Exo (as in exit or exoskeleton) -
Ex or 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 its surroundings, making it endothermic. If a reaction primarily breaks bonds, it will release energy to its 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 its surroundings, making it endothermic. If a reaction primarily breaks bonds, it will release energy to its 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.
Summary:
Summary:
In your notebook, write a summary paragraph for skill 4. (You might want to wait until after direct instruction.)
In your notebook, write a summary paragraph for skill 4. (You might want to wait until after direct instruction.)
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