Physical and Chemical Changes Lab
Total Page：16
File Type：pdf, Size：1020Kb
Name: ______
Science 6 - ______Date: ______
Physical and Chemical Changes Lab VOCABULARY: Write the definition of both words.
Physical Change -______
Chemical Change -______
Is the Describe the physical CHANGE Why? Explain your Object and chemical Action physical or answer. properties. chemical? Paper and Crayon 1.
Fruit 2.
Ammonium Nitrate with 3. Water
Marshmallow
4.
Salt and Water 5.
Magnesium Strip 6.
Crackers
7. Clear Liquid
8.
Mystery Powder 9.
2 Solutions
10.
More Practice Identifying Changes You have learned that some changes affect the composition of matter, while other changes do not. You know that a physical change changes the appearance of a substance, but does not affect its chemical properties. A chemical change, however, produces a new substance. Use what you have learned about physical and chemical changes to identify the types of changes taking place in each example below. Read each sentence and write P for the physical changes and C for the chemical changes.
______1. When baking soda is added to vinegar, bubbling occurs as carbon dioxide forms. ______2. Water evaporates from the ocean. ______3. The yolk of an egg, which contains sulfur, causes tarnish to form on silver. ______4. Ice on a lake melts to become water in the lake. ______5. When charcoal in the fire several hours, it turns to ash. ______6. The student needed to sharpen his pencil. ______7. A battery makes electricity to turn on a flashlight. ______8. A bicycle left out in the rain for several weeks will rust. ______9. You cut cloth into tiny pieces. ______10. You bake cookies for your friends. ______11. Wood is placed into the fireplace to burn. ______12. The silver vase started tarnishing. ______13. I wanted to carve a bird out of the ice. ______14. The milk turned sour immediately after the expiration date. ______15. I put some sugar in my coffee. ______16. I decided I needed to get a haircut. Directions: Look at the picture and determine whether it is a physical or a chemical change.
17. 18. 19.
20. 21. 22.