1. Investigation I: Defining Matter
Alchemy Unit
Investigation I: Defining Matter
Lesson 1: Penny for Your Thoughts
Lesson 2: Whatsa Matter?
Lesson 3: Tools of the Trade
Lesson 4: All That Glitters

2. Alchemy Unit – Investigation I
Lesson 1:
Penny for Your Thoughts

3. Lesson Essential Questions:
Key Learning:
Matter is defined by its characteristics properties; anything that takes up space and has volume
Unit Essential Question: what are physical and chemical properties of matter?
Concept: Define how scientists determine intrinsic and extrinsic properties of matter
Concept:
Compare properties of matter
Scientist use rules to conduct investigations
Investigating intrinsic properties
Lesson Essential Questions: why are mass, volume and density important in matter?
Lesson Essential Questions:
How do scientist use equipment to conduct lab investigations
What safety precautions are used in the science lab?
How do we calculate mass, volume and density? Why are they important?
Unit 1 • Investigation I

4. Essential Question
Define how scientists determine intrinsic and extrinsic properties of matter.
Unit 1 • Investigation I

5. ChemCatalyst : Copy in your journal
Long ago, early scientists tried to turn ordinary things into gold. This pursuit was called alchemy and the people who engaged in alchemy were called alchemists.
Do you think the alchemists were successful in turning things to gold? Explain your thinking.
Unit 1 • Investigation I

6. Lab Safety Quiz Answer Questions on a separate sheet of paper.
YOU WILL NOT BE ABLE TO PARTICIPATE IN LABS IF YOU FAIL THIS QUIZ!
Unit 1 • Investigation I

7. Safety is the number one priority in the Science Lab. Do you agree?
1. Yes
2. No
Answer Now
Unit 1 • Investigation I

8. I know the location of the eyewash station, safety shower, and fire extinguisher.
1. True
2. False
Answer Now
Unit 1 • Investigation I

9. The Right-to-Know Law involves......
1. Knowing what is for lunch.
2. The right to remain silent.
3. The right to know about the hazards you are exposed to.
4. Knowing how much wood a wood chuck could chuck.
Answer Now
Unit 1 • Investigation I

10. Its OK to wear contact lenses when working with chemicals.
1.Yes
2. No
Unit 1 • Investigation I

11. Goggles must be worn when...
1. Working with chemicals
2. Working with a heat source.
3. Working with glassware.
Answers 1 & 3 only.
Answers 1 & 2 only.
Answers 1,2, & 3.
Unit 1 • Investigation I

12. Its OK to make up your own experiment in class as long as you are learning from it.
1. True
2. False
Unit 1 • Investigation I

13. If there is an accident (spill, breakage, injury, etc.) you should...
1.Clean it up yourself.
2. Hide it from the teacher.
3. If minor, ignore it.
4. Report it immediately and wait for instructions.
Unit 1 • Investigation I

14. Its OK to return chemicals to their original container.
1.True
2. False
Unit 1 • Investigation I

15. Proper lab attire includes….
1.Dangling jewelry.
2.Baggy Clothes.
3.Unsecured long hair.
4.Open-toed shoes.
5.All the above.
6.None of the above.
Unit 1 • Investigation I

16. When disposing of chemical wastes…
1.Throw it all in the trash.
2.Dump it down the sink.
3.Leave it for the teacher to clean up.
4.Follow instructions from the teacher.
5.Eat or drink it.
Unit 1 • Investigation I

17. Horseplay and practical jokes are permissible in a lab setting
Horseplay and practical jokes are permissible in a lab setting. Do you agree?
1.Yes
2.No
Unit 1 • Investigation I

18. If I don’t understand the lab instructions, I should…..
1.Ask the teacher.
2.Make up my own.
3.Do nothing.
4.Copy my friends answers.
Unit 1 • Investigation I

19. When curious, I should smell substances directly….
1.Yes
2.No
Unit 1 • Investigation I

20. I should identify unknown white powders by tasting them….Yum-O.
1.True
2.False
Unit 1 • Investigation I

21. If I do not follow lab safety rules AND the instructions of the teacher, the following will happen...
1.Nothing.
2.I will go to jail.
3. I will, possibly, fail the assignment.
4. I will automatically fail the course.
5. I will, possibly, lose lab privileges.
6. Choices 3&5.
Unit 1 • Investigation I

22. I will follow all lab safety rules….
1.Yes
2.No
Unit 1 • Investigation I

23. Penny For Your Thoughts Lab
What caused the penny to turn Silver?
What caused the penny to turn gold?
Do you think the penny is truly gold?
Explain a process you would use to determine it’s true form.
Unit 1 • Investigation I

24. Alchemy Unit – Investigation I
Lesson 2:
Whatsa Matter?

25. ChemCatalyst Modern chemistry is defined as the study of matter.
What do you think matter is?
Name two things that are matter and two things that are not matter.
Unit 1 • Investigation I

26. Notes Here are some textbook definitions of matter:
Matter is anything that has mass and volume.
Matter is anything of substance in the known universe.
Matter is anything that takes up space.
(cont.)
Unit 1 • Investigation I

27. Mass & Volume
Mass is the amount of matter in an object substance. We measure mass by measuring it on a scale or balance.
Volume refers to the amount of space occupied by a substance.
Unit 1 • Investigation I

28. Properties of Matter
The intrinsic property of a substance is a property that doesn’t depend on size and shape.
It is generally not easy to determine intrinsic properties from the appearance of a substance.
Ex. Reactivity, flammability, density
Unit 1 • Investigation I

29. Extrinsic Properties can be observed qualitatively.
Properties of Matter
Extrinsic Properties can be observed qualitatively.
Ex. Color, size, shape, texture
Unit 1 • Investigation I

30. D= density (g/ml or g/cm3)
Density is defined as the mass per unit volume or how much “stuff” there is in a certain space. Density is an intrinsic property of matter.
D = m  v
D= density (g/ml or g/cm3)
M= mass (g)
V= volume (ml or cm3)
Unit 1 • Investigation I

31. Check-Out
Which of the following can be classified as matter according to our definition?
a) a beam of sunlight
b) an autmobile
c) an idea
d) your breath
e) rain
f) sadness
Unit 1 • Investigation I

32. Wrap-Up Matter is everything that takes up space.
Matter exists in many forms.
Unit 1 • Investigation I

33. Alchemy Unit – Investigation I
Lesson 4:
All That Glitters

34. ChemCatalyst
In the year 1 B.C., King Hiero commissioned the creation of a golden crown. However, he didn’t believe that the goldsmith used all gold. He asked Archimedes to determine if the crown was solid gold.
(cont.)
Unit 1 • Investigation I

35. (cont.)
Do you think Archimedes can determine if the crown is solid gold by putting it under water? Why or why not?
What happens to the level of the water if you submerge a crown in the water?
Unit 1 • Investigation I

36. The Big Question
How can we use mass and volume to prove whether or not a substance is gold?
Unit 1 • Investigation I

37. You will be able to:
Find the mass, volume, and density of solid objects.
Unit 1 • Investigation I

38. Activity
Purpose: It is not always easy to tell one form of matter from another. This activity will show you how to differentiate between different forms of matter by examining density, one of the physical properties of matter.
density = mass ÷ volume
(cont.)
Unit 1 • Investigation I

39. (cont.) (cont.) Data and Calculations Metal Mass (g)
Volume of water (mL)
Volume of water with metal (mL)
Volume of metal (mL)
2-inch long gold-colored rod
2-inch long silver-colored rod
4-inch long silver-colored rod
(cont.)
Unit 1 • Investigation I

40. (cont.) Densities of metals copper zinc gold aluminum brass 9.0 g/mL
Unit 1 • Investigation I

41. Check-In
In 1999 the United States Mint produced a coin called the Golden Dollar. It features an image of Sacagawea, the famous Native American guide for Lewis and Clark. It has a mass of 9.8 g and a volume of 1.1 mL.
What is the density of this coin?
The density of gold is 19.3 g/mL. Is this coin truly gold? Explain.
Unit 1 • Investigation I

42. Wrap-Up
Density is an intrinsic physical property of matter. It is a measure of the mass per unit of volume of a substance.
One substance can be distinguished from another by examining its intrinsic physical properties.
Unit 1 • Investigation I