Chemistry Web Quest: Atom Builder
Online:
Name_________________________
Date _________________________
http://phet.colorado.edu/en/simulation/build-an-atom
At the home screen, click the picture of the Atom.
Build an Atom
1. Click the three green “+” signs on the right hand side of the screen
2. Make sure all of the boxes are checked for the SHOW box.
3. Put 4 protons on the X.
4. What element is this? ______
5. What does it say if you put 3 neutrons?______________
6. How many neutrons do you put in the middle so it says STABLE?
7. Make the atom neutral.
8. How many electrons did it take to make it a neutral atom?
9. How many electrons can fit on the first orbital?
10. How many valence electrons are in the picture?
11. If you take off 1 electron, what is the net charge?
12. When the atom is neutral, what is it’s mass?
Press the RESET button​.
1. Change the picture from orbital to cloud.
2. Build the atom for Carbon –
a. Protons =
b. Electrons =
c. Neutrons =
3. What is the net charge when there are 7 electrons on the picture?
4. What is the net charge when there are 8 electrons on the picture?
5. What is the net charge with 5 electrons?
6. What is the net charge with 4 electrons?
7. Draw a picture of the carbon atom with a net charge of +1:
On the bottom pick SYMBOL.
1. Put 3 protons in the nucleus. What element is this?
2. Put 2 neutrons in the nucleus. Is this neutral or an ion? Positive or
negative?
3. Put 5 electrons on the orbitals.
4. How many positive subatomic particles in the picture?
5. How many negative subatomic particles in the picture?
6. Do you have more negative or positive?
7. How many more?
1.
2.
3.
4.
What is the largest atom you can build?
What is the elements name?
How many neutrons for it to be stable?
Take off 1 electron (keeping 9 on). Copy and label the rectangle
that is on the right:
On the bottom, click the picture of the house. Pick Game.
Game Mode:
Game #1:
Game #2:
Game #3:
Game #4:
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