1. Physical science 5-1 Questions on energy and matter Making Ice Cream Questions on making ice cream

2. Big question How does the change in energy within an object affect its state of matter?

3. Homework Answers 1) Atoms and molecules act like particles Particles always move particles move faster at higher temp big particles move slower than smaller 2) Temp is a measure of average kinetic energy of particles in object

4. Homework 3) solid- marble, brass liquid- water, mercury gas- oxygen, nitrogen plasma- fire, lightning 4) Freezing- liquid to gas (particles speed up) boiling (liquid to gas) particles speed up sublimation (solid to gas) particles speed up melting solid to liquid particles speed up

5. homework 5) a) endo b) endo c) endo d) exo 6) Solids-definite shape and volume liquids-definite volume and indefinite shape gases-indefinite shap and volume

6. Homework 7) 8) in a closed system, energy and mass can not be created or destroyed 9) your sweat is transformed into a gas. Gas particles move to dogs nose Scent gets stronger as dog gets closer

7. HW Quiz On monday

8. Ice Cream Making Concentrate on the transfer of energy between components Concentrate on the changes in states of matter Enjoy!

9. Need 4-5 volunteers

10. Equipments and ingredients Dissolve 2 tablespoons of sugar in 1/2 cup of milk, then add a few drops of vanilla or other extract for flavor. Pour milk mixture in a zip-close sandwich bag and close securely. Half fill a 1 gallon zip-close freezer bag with ice cubes, then add about 2 tablespoons of rock salt. Place the sandwich bag into the freezer bag and securely close the freezer bag. Gently massage the bags together to keep the inner bag mixing without heating it with your hands (you do NOT want the inner bag to open). Ice Cream should be created in about 5-25 minutes Cover bag with a towel to protect your hands

11. Directions Once ice cream is created, take bag out and rinse with water/wipe off with towel Open bag and pour into cup Add chocolate if you want!

12. During the making of the ice cream… Answer the questions on the handout