On the Welcome screen, click Enter the Program to see the main menu for the program components. Click Enter Teacher Guide to see how the course is organized and where to use the multimedia components. Click Check Browser to verify that your web browser is properly configured to run the program.

When you click Enter the Program, a program credit screen will appear. Click anywhere to continue to the main menu. Click a title to go to the activity.

The menu also provides access to the Teacher Guide, safety information, and Credits. Each part of the CD-ROM is discussed in detail later in this chapter.

1. Click to enter the program.
2. Click to use the Teacher Guide menu.
3. Click to verify the browser is properly configured.
4. Two-Substance Reactions
5. Periodic Table
6. Gas in a Syringe
7. Particles in Solids, Liquids, and Gases
8. Thermometer
9. Energy Flow
10. Energy Transfer by Collision
11. Mixing Hot and Cold Water
12. Explore Dissolving
13. Safety
14. Teacher Guide
15. Credits

When you select something from the main menu, it appears in a new browser window. The main menu window remains open. At any time you can bring this window to the front and open another activity.

To move between windows, click the window that you would like to bring to the front. On a Macintosh, you can also select “FOSS Chemical Interactions: Main Menu” from the Window menu in your browser to bring the window to the front. On a PC, click the desired window on the start bar to bring it to the front.

If a browser window has a tool bar, use the Back button to navigate to earlier pages viewed in that window, just as you would in any website.

Only one activity can be open at a time. If you select a new activity from the main menu without closing the old activity, the new activity will take the place of the old one in the browser window. All data from the old activity will be lost.

The movies in this program use the QuickTime Player. Use the control bar at the bottom of the movie screen to operate the movie. To play the movie, click the single right-pointing arrow button on the left-hand side of the control bar. Click this button a second time to stop the movie.

Your current location in the movie is indicated by a slider on the control bar. Click at a new location for the slider to restart, rewind, or fast-forward the movie. Drag the slider slowly to see the movie at a different rate.

Exit the program by closing all program windows, or choose Quit from the browser File menu. You can also quit the browser by pressing Command + Q on the Macintosh and Alt + F4 on the PC.




When troubleshooting, try these steps.
1. Use the Check Browser feature to be sure your browser is set up correctly.
2. Quit all other applications.
3. Quit and restart your browser.
4. Restart your computer.
If the program worked before but you are using a different browser or a different computer, you may need to set up the new browser. Use the Check Browser feature.

Here are some tips for getting the best possible view of the various components of the program on a classroom monitor.

Screen Resolution. This program is designed for a screen resolution of 800 ✕ 600. Changing your monitor display to this screen resolution is a good way to increase the visibility of many of the program’s components.

Hide Toolbars to See More Text. Many browsers provide options for showing and hiding toolbars at the top of the window. Look for a View menu in your browser and then find Toolbars. The ones that are checked are visible—select them to uncheck them and thereby hide them. Click them again to reveal the toolbars.

Resize Browser Window. All activities and the Teacher Guide were designed in Flash and will resize to the window they are in. For these components, simply resize the browser window to be as large as possible.

For more troubleshooting tips, go to the FAQ from the CD-ROM splash screen when you first start the program, or go on-line to























The Teacher Guide is a convenient way to navigate to the multimedia components that accompany each part of the Chemical Interactions Course. You can enter the Teacher Guide from the Welcome screen or by clicking Teacher Guide from the main menu.

The Teacher Guide lists all the investigations in the course. Click an investigation title to retrieve information about it. The investigation screen will display the parts of the investigation. Click the part titles to see:
• A synopsis of the objectives and activities for that part.
• A list of multimedia components associated with that part with links.
• A list of lab notebook pages associated with that part with links.
• A list of transparencies associated with that part with links.
• A list of the readings from the Resources book associated with that part, but no links.

Click the title of a multimedia activity to open it.

Click on the investigation title to return to the overview of that investigation.

Click the Table of Contents button on an investigation screen to return to the Teacher Guide main screen. Click the Close Guide button on the Teacher Guide window to bring up the main menu.









1. Click a title to learn more about an investigation.
2. Click to return to the Main Menu.
3. List of parts. Click a title to learn about the part.
4. Multimedia components for a part. Click a title to retrieve it.
5. Lab notebook pages for a part. Click a title to retrieve it.
6. Transparencies for a part. Click a title to retrieve it.
7. Resources book sections for a part.
8. Click to return to the investigation overview and goal statement.
9. Click to return to investigation list.








The media for Two-Substance Reactions can be accessed through two different interfaces—the vial interface via the main menu and the menu interface via the Teacher Guide.

In Two-Substance Reactions, students combine two substances and add water to see what happens. They can access this vial interface page using the Two- Substance Reactions button on the main menu.

Click on a substance in the vial holder to add it to the well tray. Then click on a second substance. A squeeze bottle labeled “add water” will appear. Click this to add water.

Some combinations will not result in a reaction and you will be prompted to try another combination. When substances do react, you will see a video clip of the reaction. Use the Play button in the video control bar to view the video clip again.

Click the Compare to Mystery Mixture button to view a side-by-side video clip of the reaction with the mystery mixture reaction. For a still image, click the View Evaporated Product button. To see still images side-by-side, click the Compare to Evaporated Mystery Mixture button. Click the Return to Vials button to return to the vial interface page.

When you return to the vial interface page, you will see a list of each combination you have tried. You can click on the substances in the vials to try a new combination, or you can click on the combinations in the list to view the reactions again.











1. Click a substance to add to the well tray.
2. Add water.
3. Play button
4. Compare to Mystery Mixture Reaction button
5. View Evaporated Product
6. Compare to Evaporated Mystery Mixture button
7. Return to Vials button



There is an alternate menu interface page available using the Two-Substance Reactions link in the Teacher Guide. Each reaction is listed, with options to view the video of the reaction, to view a side-by-side video of the reaction with the mystery mixture, or to view a still image of the evaporated product.





The interactive Periodic Table has four main features. Students can locate an element by using the Find an Element pull-down menu, get more information about an element by clicking on it, view the elements by various categories, and play element games.

The Find an Element pull-down menu is arranged alphabetically. Click on the pull-down arrow to access the menu. Use the scroll bar to view all of the elements. Click on an element and its location will be highlighted in red on the Periodic Table.

Click on an element to see a pop-up box with some basic information about the element. Click on the pop-up box to open another window with additional details.









1. Find an Element pull-down menu
2. Element information pop-up
3. Element categorizing
4. Element ID Game button





Click on a menu item to choose a category for highlighting the elements. Click on a subgroup within the category to highlight the elements that belong in that subgroup. Multiple subgroups can be selected.

For any Top 10 subgroup, click on the pie chart to see a blowup of the chart and to view the abundance by percentage of mass.

Click the Play Element ID Game button to open the game in a new window. The new window will allow students to continue to access the Periodic Table as they answer the element questions.

Game 1 focuses on an element’s location on the periodic table. Students are given the name of an element to locate. They have 30 seconds to click on that element. As time counts down, up to three hints are provided.

Game 2 focuses on information about specific elements. Students are to locate an element based on a hint about that element. As time counts down, up to three additional hints are provided. The Periodic Table in the background can be brought forward to get additional information.





In Gas in a Syringe, students observe the behavior of gas molecules when a syringe plunger is compressed and released. Click the syringe plunger and drag it downward to compress the air. Click the Freeze Frame button to freeze the motion of the molecules. Then click the Play button to restart the animation. Click the Show Surrounding Air button to see the molecules outside of the syringe. Or click the Hide Surrounding Air button to view the molecules in the syringe only.


1. Syringe plunger
2. Freeze Frame/Play button
3. Show Surrounding Air/Hide Surrounding Air button




In Particles in Solids, Liquids, and Gases, students observe the behavior of water or lead particles in solid, liquid, and gas phases.

The activity opens by showing the solid, liquid, and gas phases of water. Click the Info button to see the temperature of each phase. Click the Warm It Up button to see the particle behavior at a higher temperature within the phase. Click the Cool It Off button to return to the lower temperature. Click the Highlight One Particle button to track a particle in each phase.

Click the Show Phase Change button to open the Phase Change simulation. Click on the slider markers to change the phase. Click on the Lead button to change the substance shown from water to lead.


1. Info buttons
2. Warm It Up/Cool It Off buttons
3. Highlight One Particle/turn off highlight button
4. Show Phase Change button
5. Choose water or lead




In Thermometer, students get a close-up look at how particle behavior makes a thermometer work.

Click the Start Adding Energy button to begin the demonstration. Steps 1 through 3 describe what is happening as the water is heated. The close-up view of the thermometer shows the corresponding particle behavior.

Click the Start Removing Energy button to continue the demonstration. Steps 4 through 6 describe what is happening as the water cools down.


1. Start Adding Energy button
2. Start Removing Energy button




In Energy Flow, students show energy flow based on temperature.

The opening screen shows the temperatures for the outer tub, room, and inner tub in the options box. Click and drag these temperatures to their appropriate temperature label boxes.

Once the temperatures have been correctly placed, green arrows will appear in the options box. For each arrow space, identify the arrow that correctly shows the direction of energy flow. Click and drag the appropriate arrows to their spaces. Click the Check Me button.

Incorrect arrows will be highlighted in red. Click and drag the green arrows from the options box to replace any incorrect red arrows, and then click the Check Me button again. When each instance of energy flow has been correctly labeled, a message will tell the students that they identified the energy flow correctly. Click the Another button to play again.
















1. Temperature options box
2. Temperature label boxes
3. Arrows
4. Arrow spaces
5. Check Me button




In Energy Transfer by Collision, students see that when particles with different amounts of kinetic energy collide, energy transfers from the fast-moving particles to the slow-moving particles. Use the Next button to move through the demonstration.

Once you have seen the collision, you can click the Low Speed, Medium Speed, or High Speed buttons to see it again.



















1. Next button
2. See it again at low, medium, or high speed.




In Mixing Hot and Cold Water, students are presented with a container of hot water (fast-moving particles) and a container of cold water (slow-moving particles). Students mix the water together in a third container. The particles transfer kinetic energy through collisions, resulting in medium-speed particle movement.

Click the Pour button to mix the hot and cold water.


1. Pour button




In Explore Dissolving, students see the difference between what happens when they mix sugar (a soluble substance) with water, and when they mix calcium carbonate (an insoluble substance) with water.

From the main menu, click on Sugar. Then click on the spoon to drop the sugar into the water.
















1. Select a substance.
2. Click the spoon to put the solute in the solvent.


Use the video control buttons to view the animation. Each button has a rollover describing its function.

Click the Info button to see a step-by-step description of the animation. Click the Next button to advance to the next step of the description. Click the Replay button to start over at the beginning of the step-by-step description.

Click on the X button to exit the Info at any time. If you click on the Info button again, you will return to the step you were viewing when you exited the Info.

When you are ready to view calcium carbonate mixed with water, click the Back to Menu button.

From the main menu, click on Calcium carbonate. Click on the spoon to drop the calcium carbonate into the water. Use the video control buttons to view the animation. Click the Info button to see a description of the animation.















1. Video control buttons
2. Info
3. Back to menu
4. See the next step of the Info.
5. Start over at the beginning of the Info.
6. Exit the Info.