PhET Reactants, Products and Leftovers (Premium)

Click on the "Sandwiches" button to launch the sandwich sim and make sure to select cheese in the top-right corner. Play with the sim and then answer the following:

What does the sim call the material found to the LEFT of the arrow?

• Reactants

• Products

• Leftovers

• Sandwiches

Tags

NGSS.MS-PS1-2

Still in the sandwich part of the sim, what does it call the material to the RIGHT of the arrow?

• Reactants

• Products

• Leftovers

• Sandwiches

Tags

NGSS.MS-PS1-5

Play with both the "Cheese" and "Cheese and Meat" sims. In the "Cheese" sim, (a)   pieces of bread and​ (b)   piece of cheese make one sandwich. In the "Meat and Cheese" sim, (c)   pieces of bread, (d)   piece of cheese, and​ (e)   piece of meat make one sandwich.

• three
• zero
• four
• two
• one

In the sandwich sim, what do the individual components (bread, cheese, meat) represent in a chemical reaction?

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Also in the sandwich sim, what do complete sandwiches most likely represent?

Tags

NGSS.MS-PS1-1

Just like there are countless ways to make a sandwich, there are countless ways of combining atoms to form molecules. How do you think chemistry will continue to make your life better?

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Click on the "Molecules" button to launch the second part of the sim.

Once again, what do you call the material to the LEFT of the arrow?

• Reactants

• Products

• Leftovers

• Molecules

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What does the "Molecules" sim call the material to the RIGHT of the arrow?

• Products

• Leftovers

• Reactants

• Molecules

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Make sure "Make Water" is selected in the top-right corner. Add one molecule of hydrogen (H₂) and one molecule of oxygen (O₂) to the reactants side. Does this reaction form any products?

• No, the hydrogen and oxygen disappear

• No, but the hydrogen and oxygen are still there as leftovers

• Yes

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Now add one more hydrogen (H₂) molecule so there are two and leave oxygen (O₂) at one. What do you have now on the PRODUCTS side?

• One molecule of water

• Two molecules of water

• Nothing

• A bunch of leftovers

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5