Lesson 1.A.

ACTIVITY 1

INSTRUCTIONS

• Stay in your group and work cooperatively.

• Use the cups provided for each test. Make sure to wipe the spoon clean before re-using it.

• When measuring powders, use 1 tablespoon each. When adding liquids, use 1 tablespoon of water or vinegar as instructed.

• Provide 3 pieces of paper to get the powders. Handle the powders carefully — do not taste them. You may use your sense of sight and touch only.

INSTRUCTIONS

• After each test (physical observation, solubility, reaction), record your observations on the worksheet.

• Work quickly but carefully. You have only 20 minutes to finish all steps — observation, testing, and group reflection.

• Form a group with 5 members.

• Write your answer to your notebook.

• Only 1 representative per group will get the materials from the teacher.

• If you have questions, raise your hand — I will come to assist you.

Would a larger sample bubble more in vinegar?

Would the mass or volume of each sample change the results

PART 1.

Categorize the following properties of matter as intensive physical property, extensive physical property or chemical property.

color does not depend on amount

mass depends on quantity

formation of a new substance

depends on how much paper