Counting Atoms - PHET Lab

Find where Passage 1 and Passage 2 are.

What is on each page?

Now, click on Passage 1. Then Click the button that says "Single"

Click "I did it"

What you will do is drag the atoms from the bucket at the bottom, to the blue space above.

Your goal is to bond them together so that they make a new molecule.

Create a water molecule, and select "I made water" for the answer

Now that you have made the water molecule, you will need to click the arrows next to the buckets to make the rest of the molecules.

Select "I found the bucket and I made the rest of Collection 1" when you have finished the first collection

Using the "Single" section, use the atoms in the buckets to build the molecules on the right side of your screen.

After you have built them, answer the following questions:

How many H atoms are in H₂O

Using Passage 1: Single - answer the following question

How many Oxygen (O) atoms are in O2

Using Passage 1: Single - answer the following question

Carbon dioxide has one carbon atom and (a)   oxygen atoms. (I WANT THE NUMBER SPELLED OUT)

After you have completed collection 1, complete the molecules for collection 2.

Once you have completed those, answer the following questions:

How many Hydrogen atoms would be in phosphine? (PH₃)

How many Oxygen atoms should ozone (O₃) have?