1. Unit 1: ALCHEMY Matter, Atomic Structure, and Bonding
Living By Chemistry
Unit 1: ALCHEMY
Matter, Atomic Structure, and Bonding

2. In this unit you will learn:
what matter is composed of
to use the language of chemistry
to decode information contained in the periodic table
how new substances with new properties are made
what holds substances together

3. Section I: Defining Matter
Lesson 1 Tools of the Trade
Lesson 2 A Penny for Your Thoughts
Lesson 3 What’s the Matter?
Lesson 4 Mass Communication
Lesson 5 All That Glitters

4. Day 2 and 3 Lesson 1: Tools of the Trade
Lab Equipment and Safety

5. Day 2 ChemCatalyst
List at least four tools or pieces of equipment you think a chemist might use in a chemistry lab.

6. Key Question
What tools and equipment do chemists use?

7. You will be able to:
recognize common chemistry tools and equipment that you will be using in the course
find all the safety equipment in the laboratory and understand its use
understand the rules of safety in the chemistry laboratory

8. Prepare for the Activity
Work in groups of four.

9. Discussion Notes Safety Equipment: fire blanket first aid kit
fire extinguisher
aprons/lab coats
eye wash
shower
safety goggles
hood

10. Day 3 ChemCatalyst Sketch or describe these items.
Where are these items located in your classroom?
graduated cylinder
test tube rack
Erlenmeyer flask
balance or scale
eye wash
fire extinguisher

11. Wrap Up What tools and equipment do chemists use?
Chemists have a set of tools that are useful for studying matter.
Chemistry laboratories have a number of potential hazards.
Chemists know the safety rules and how to use the safety equipment.

12. Day 4 Lesson 2: A Penny for Your Thoughts
Introduction to Chemistry

13. Day 4 ChemCatalyst
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 these early scientists were successful in turning things into gold? Explain your thinking.

14. Key Question
What is chemistry?

15. You will be able to: observe a procedure and write observations
define and formulate a hypothesis to explain observed phenomena
define chemistry and begin to describe what chemists study

16. Prepare for the Demonstration
In this demo, you will observe a chemical transformation firsthand.

17. Discussion Notes
To determine whether the new penny is gold, you need to study its properties.
Property: A characteristic of a substance.
Physical Properties: color, hardness, size, weight
Chemical Properties: how a substance reacts

18. Discussion Notes (cont.)
Chemistry: The study of substances, their properties, and how they can be transformed. The study of matter and how matter can be changed.

19. Discussion Notes (cont.)
Scientists use a systematic approach to solve problems in science.
Hypothesis: A testable explanation for an observation.

20. Wrap Up What is chemistry?
Chemistry is the study of what substances are made of, how they behave, and how they can be transformed. It is the study of matter and how matter can be changed.
A hypothesis is a testable explanation for an observation.
Scientists use a systematic approach to solving problems in science.

21. Day 4 and Day 5 Penny Density Lab
Mass and Volume
And Density

22. Day 5 ChemCatalyst
Which has more mass and weighs more, 5 kilograms of bricks or 5 kilograms of feathers? Explain your thinking.
2. Would it hurt more to be hit with 5 pounds of feathers or 5 pounds of bricks? Explain your thinking.

23. Key Question
How do you determine the masses and volumes of different substances?

24. You will be able to: measure mass using a balance
measure the volume of regularly and irregularly shaped objects

25. You will be able to:
define density as the amount of mass in a certain space, or mass per unit volume
solve problems for density, mass, or volume using the equation D = m/V
explain how and why density can be used to identify a substance.

26. Prepare for the Lab
Work with your lab partner.

27. Prepare for the Lab (cont.)
In this lab, you will be measuring volume with a graduated cylinder.
To the nearest hundredth of a milliliter, the volume of liquid is 5.52 mL.

28. Discussion Notes
Mass is commonly measured in units of grams (g) or kilograms (kg).
1 kg = 1000 g

29. Discussion Notes (cont.)
Volume is a measure of the amount of space occupied by something.
1000 mL = 1 L
Mass: A measure of the quantity of matter in an object.
Volume: The amount of space a sample of matter occupies.
1 mL = 1 cm3

30. Discussion Notes
Extensive property: A characteristic that is specific to the amount of matter.
Intensive property: A characteristic that does not depend on the size or the amount of matter.
Density: The mass of a substance per unit volume. D = m/V, where D is density, m is mass, and V is volume. Density is usually reported in g/cm3 or g/mL.

31. Discussion Notes (cont.)
Common materials and their densities.
Material
Density
zinc
7.1 g/cm3
gold
19.3 g/cm3
paper
0.9 g/cm3
brass
8.4 g/cm3
water
1.0 g/mL
copper
9.0 g/cm3
aluminum
2.7 g/cm3
lead
11.4 g/cm3

32. Wrap Up
How can you use mass and volume to determine the identity of a substance?
One substance can be distinguished from another by examining its intensive physical properties, such as density.
Density is a measure of the mass per unit volume of a substance.
The density of any given substance is always the same (as long as the temperature remains constant).

33. Check-in A penny has a mass of 2.498 g.
a. What is the mass to the nearest tenth of a gram?
b. How would you determine the volume of a penny?
c. What is the difference between mass and volume?
d. Suppose you find that the golden penny has a mass of 2.6 g. If you compare it with the mass of this penny, what can you conclude?

34. Day 7 Lesson 3: What’s the Matter?
Defining Matter

35. Day 7 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.

36. Key Question
What is matter?

37. You will be able to: define matter
classify an item as matter or not matter

38. Prepare for the Activity
Work in groups.

39. Discussion Notes
The items that are clearly matter are all objects, or things, that are tangible.
Energy and ideas are not matter, but they involve matter.
Matter has some sort of dimension and substance to it.

40. Discussion Notes (cont.)
A good definition should work 100% of the time.
Here are some textbook definitions of matter:
Matter: Anything that has substance and takes up space.
Matter: Anything that has mass and volume.

41. Discussion Notes (cont.)
Energy is the ability to do work or make reactions happen.

42. Wrap Up
What is matter?
• Matter is everything that has substance and takes up space, or that has mass and volume.
• Ideas and energy are examples of things that are not matter.
• Chemists study all kinds of matter.

43. Check-in Which of the following can be classified as matter?
a. a beam of sunlight b. an automobile
c. an idea d. your breath
e. rain f. sadness

44. Day 8 ChemCatalyst
In the year 250 B.C.E., King Hiero commissioned a goldsmith to make him a crown out of pure gold. However, when he received the crown, he suspected that the goldsmith had taken some of the gold and replaced it with a cheaper metal, even though it still weighed the same. He asked Archimedes to determine whether the crown was solid gold.
How do you think Archimedes determined whether the crown was solid gold?

45. Day 9 ChemCatalyst
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 volume of 1.1 mL.
Is this coin truly gold? Explain. (The density of gold is 19.3 g/mL.)