Help with concepts and the model:
- An atom is represented by a paper clip.
- Different types of atoms are represented by different colors of paper clips.
- Atoms are attracted to other atoms and pull together to form atom groups (molecules).
Help with the module:
- Drag the correct color and number of paper clips onto the workspace to make the molecule.
- Use the arrow keys on the sides of the instruction box to advance or go back one screen.
Help with concepts and the model:
- An energy unit is represented by a paper strip.
- Different forms of energy are represented by different colors of paper strips.
- Energy units can be transferred from one place or object to another.
- When energy units are transferred, they stay in the same form.
- Energy units can be transformed, or changed, into other forms of energy.
- Energy units are forever - there is the same number of units before and after any change.
Help with the module:
- Drag the correct number and form of paper strips to the before and/or after box to show the change in energy.
- Use the arrow keys on the sides of the instruction box to advance or go back one screen.
Help with concepts and the model:
- Every atom has a tiny bit of mass.
- Different types of atoms have different masses.
- The mass of an atom group (molecule) is the sum of the masses of the individual atoms.
Help with the module:
- Drag individual paper clips to the right-hand scale that make up the paper clip group on the left scale.
- WATCH the scale reading to make sure the mass of each paper clip registers!
- Use the arrow keys on the sides of the instruction box to advance or go back one screen.
Help with concepts and the model:
- Atoms in one molecule can be attracted to atoms in another molecule.
- When molecules get close, the attracting atoms pull together to form their own atom groups.
- The original atom groups are destroyed when the new atom groups form.
- All of the original atoms (with their mass) still exist - atoms are forever.
- The total mass of the original molecules equals the total mass of the new molecules.
Help with the module:
- Click on the name of each molecule to make its image appear.
- Drag the correct molecules to each scale.
- WATCH the scale reading to make sure the mass of each paper clip group registers!
- Make sure you have the same atoms on each scale and the same total mass.
- Use the arrow keys on the sides of the instruction box to advance or go back one screen.
Help with concepts and the model:
- Fuels molecules have carbon atoms attracted to other carbon atoms or hydrogen atoms.
- Fuel molecules contain lots of chemical energy.
- Non-fuel molecules (oxygen, water, and carbon dioxide) have little chemical energy.
- The atoms in fuel molecules are attracted to the oxygen atoms in oxygen molecules.
- When fuel and oxygen molecules get close, the attracting atoms pull together to form new atom groups.
- The atom groups that form are water molecules and carbon dioxide molecules.
- The original molecules of fuel and oxygen are destroyed when the new molecules form.
- The chemical energy in the fuel molecules is changed into lots of thermal energy, some light energy, and a little chemical energy in the water and carbon dioxide molecules.
Help with the module:
- Drag the correct molecules to each scale, remembering that burning a fuel with oxygen results in carbon dioxide and water.
- WATCH the scale reading to make sure the mass of each paper clip group registers!
- After you complete the change in matter, the change in energy boxes appear.
- Start by dragging the “energy in fuel” to the before box. Choose a number at least 100 units.
- Drag the energy in the “non-fuel molecule” (oxygen) to the before box. Choose a number no more than 10% of what you chose for the fuel energy.
- In the after box, drag thermal energy units first, choosing a number around 50% of the total energy you started with.
- Now, in the after box, drag the energy in the non-fuel molecules (water and carbon dioxide). Choose a number no more than 10% of what you chose for the fuel energy.
- Last, in the after box, drag light energy units. Remember, the number of energy units has to be the same before and after burning.