Biochemistry Simulations Name_____________________ hr__

Build an Atom1. Go to https://phet.colorado.edu/sims/html/build-an-atom/latest/build-an-atom_en.html

2. Click on .

3. Construct an atom of C. Make it neutral (not necessarily stable). Make its mass number equal 12. What is its “Net Charge;”______

4. Construct an atom of O. Make it stable (not necessarily neutral). Make its mass number equal 16. What is its “Net Charge;”______

5. Click on the button at the bottom. Then click on .

6. Construct a Ne atom. Add 10 neutrons. Make it stable and neutral. What is its mass number? _______

7. Click on the button at the bottom. Then click on .

There are four games. Starting from the left play each game to its completion. If you did not receive five stars, replay the game until you do. Record your time once you receive your five stars.

Five star time: __________ __________ __________ __________

Build a Molecule1. Go to https://phet.colorado.edu/en/simulation/build-a-molecule

2. Download the “Build a Molecule” program. Open and save it from the download arrow .

3. You should be on the tab. Construct each of the molecules it asks for in the “Your

Molecules” section on the right. Click the when you need more atoms to make more molecules.

4. Complete 5 “collections.” Then click on . Complete 5 collections.

5. Then click on . Construct the following organic molecules;

a. CH4 What is the name of the molecule? ___________________

b. C2H6 What is the name of the molecule? ___________________

c. C3H8 What is the name of the molecule? ___________________

c. C4H10 What is the name of the molecule? ___________________

pH Scale1. Go to https://phet.colorado.edu/sims/html/ph-scale/latest/ph-scale_en.html

2. Click on .

3. Click on the drop-down menu at the top where you see “Chicken Soup.” Which substance listed there is the

most acidic? ________________ Which is the most basic? _________________

4. Let out the liquid in the beaker. Then fill it with 0.5 L of water. Drag the meter into the water. What

is its pH? ________. Add two short squirts of battery acid to the water. What does it do to the pH?

_________________________________________________________________.

5. Let out the battery acid and fill it with 0.5 L of water. Add two short squirts of drain cleaner. What does it do

to the pH ?________________________________________________________.

6. When a person get heartburn, they’ll often take Tums/Rolaids to correct it. How do they help relieve heartburn?

Make sure you use the words; acid, base (or acidic and basic), neutral, stomach acid and antacid.

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