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 II: Basic Building Materials
Lesson 6 A New Language
Lesson 7 Now You See It
Lesson 8 What Goes Around Comes Around
Lesson 9 Create a Table
Lesson 10 Breaking the Code

4. Lesson 6: A New Language
Chemical Names and Symbols

5. ChemCatalyst
Two bottles are on a shelf in a chemistry lab. Both contain a shiny yellow metal. Bottle A is labeled Au(s). Bottle B is labeled FeS2(s).
What do you think the symbols on the bottles mean?
Do you think both bottles contain gold? Why or why not?

6. Key Question
What do chemical names and symbols tell you about matter?

7. You will be able to: define the terms element, compound, and aqueous
recognize whether a substance is an element or a compound based on its chemical formula or symbol
decipher some basic chemical formulas and symbols

8. Discussion Notes The Language of Chemistry Symbol for sulfur
Symbol for oxygen
Symbol for copper
Subscript for oxygen

9. Discussion Notes (cont.)
All matter in the universe either is an element or is made of some combination of elements.
Element: A unique substance that cannot be broken down into simpler substances through chemical processes. Elements serve as the building materials of all matter.
Compound: A pure substance that is a chemical combination of two or more elements in a fixed ratio.

10. Discussion Notes (cont.)
The first letter of an element’s symbol is always uppercase, and if there is a second letter it is always lowercase.
Compounds are represented by chemical formulas.
Chemical formula: A combination of symbols and subscripts that indicates the number and types of elements in a compound.

11. Discussion Notes (cont.)
Some common groupings of elements have their own specific names.
Substances come in different physical forms, called phases.
Phase: The physical form a substance is in, such as solid, liquid, or gas. Phase is greatly influenced by temperature.
Aqueous: A substance is aqueous when it is dissolved in water.

12. Wrap Up What do chemical names and symbols tell you about matter?
Chemical symbols represent the elements. Each element has either a one- or two-letter symbol. The first letter is always uppercase; the second letter is always lowercase.
The chemical formula of a substance indicates what elements are in it as well as the relative amounts of each element in that substance.
The symbols (s), (l), (g), and (aq) indicate the physical form or phase of a substance and whether it is dissolved in water.

13. Check-in
Imagine that you find a vial labeled Na2SO4(aq). What does the label tell you about what is in this vial?

14. Lesson 7: Now You See It
The Copper Cycle

15. ChemCatalyst
Answer these safety questions about the lab you will be doing today. If you can’t answer these questions, go back and reread the procedure.
Name three things that could be dangerous in this lab.
Why must part of the lab be done in a fume hood?
What do you need to put on before starting the lab? Why?

16. Key Question
What happens to matter when it is changed?

17. You will be able to: follow a lab procedure safely
describe a chemical change or chemical reaction

18. Prepare for the Lab (cont.)
During the lab, follow these safety guidelines:
Wear your safety goggles at all times.
Be very careful when handling chemicals. If any gets on your skin, wash the area immediately with water and inform your teacher.
Use the fume hood when adding the nitric acid to the copper; do not breathe in any of the gas.
When using the hot plate, set it at a medium setting. Be careful not to splash when stirring the chemicals.

19. Prepare for the Lab (cont.)
Remove the beaker from the hot plate with beaker tongs.

20. Prepare for the Lab (cont.)
Set up and use the funnel and filter paper following the instructions.

21. Check-in
You could see copper only in the first and last steps of today’s lab. Where do you think the copper was the rest of the time? Be specific.

22. Lesson 8: What Goes Around Comes Around
Conservation of Matter

23. ChemCatalyst
What do you think happened to the copper powder in the copper cycle experiment when it was mixed with the nitric acid?

24. Key Question
What happens to elements in a chemical change?

25. You will be able to:
explain that the product of chemical reactions depends on what was present at the time of reaction
explain that matter cannot be created or destroyed in a chemical reaction

26. Discussion Notes
The Copper Cycle

27. Discussion Notes (cont.)
You could prove that copper was not destroyed by measuring the mass of the copper powder at the beginning and at the end of the experiment.
Law of conservation of mass: The law states that mass cannot be gained or lost in a chemical reaction–matter cannot be created or destroyed.

28. Discussion Notes (cont.)
No matter what was done to the copper, it was not broken down any further.
The observations we have made in the copper cycle lab provide further evidence that the golden penny is not gold.

29. Wrap Up What happens to elements in a chemical change?
Elemental copper can be transformed through chemical reactions and then recovered.
We can represent elements with symbols and keep track of them during chemical reactions.
Elements combine and recombine but are not created or destroyed in chemical reactions.

30. Check-in
Go to ExitTicket

31. Lesson 9: Create A Table
Properties of the Elements

32. ChemCatalyst
1. How do you think the elements are organized in this table?
2. What do you think the numbers represent?

33. Key Question
How is the periodic table organized?

34. You will be able to:
describe how the organization of the periodic table is based on reactivity and atomic mass
predict the characteristics of a missing element on the periodic table based on its position in the table

35. Prepare for the Activity
Work in groups of three or four with one set of Create a Table cards for each group.

36. Prepare for the Activity (cont.)
Atomic Mass: The mass of a single atom (or isotope) of an element.
Each element has an average atomic mass that is expressed as a decimal number. These are the numbers that appear in the ChemCataylst and also on the Create a Table cards.

37. Prepare for the Activity (cont.)
What is reactivity?
Reactivity is a property that describes whether an element or compound will chemically combine with other substances to form compounds and also describes the speed of a reaction. Reactivity information is included on the Create a Table cards.

38. Discussion Notes
Mendeleyev organized his periodic table based on the properties of the elements, such as reactivity and atomic mass.
Mendeleyev’s arrangement of the elements helped predict the existence and properties of as-yet-undiscovered elements.

39. Wrap Up How is the periodic table organized?
Mendeleyev organized his periodic table based on the properties of the elements, specifically, reactivity and atomic mass.
Elements in each column of the periodic table have similar properties.
Reactivity describes whether an element will chemically combine with other common substances and also describes the speed of the reaction.
Mendeleyev’s arrangement of the elements helped predict the existence of undiscovered elements.

40. Check-in
Which of these elements would be grouped together on the periodic table? Explain your thinking. 
cadmium Cd
moderately soft, silvery, solid, metal
reacts very slowly with water
found in CdCl2(s)
zinc Zn
moderately hard, silvery, solid, metal
found in ZnCl2(s)
iodine I
purple, solid, nonmetal
reacts slowly with metals
found in ICl(s)
mercury Hg
silvery, liquid, metal
does not react with water
found in HgCl2(s)

41. Lesson 10: Breaking the Code
The Periodic Table

42. ChemCatalyst
The atomic mass of silver is amu. The atomic mass of gold is amu. Where would you place these elements on the periodic table you created in Lesson 9: Create a Table? Explain your reasoning.

43. Key Question
What information does the periodic table reveal about the elements?

44. You will be able to:
use the periodic table to identify elements that are metals, nonmetals, metalloids, alkali metals, alkaline earth metals, transition elements, halogens, noble gasses, lanthanides, and actinides
describe the general properties of elements, that are periodic in nature
predict the general properties of an element based on its location on the periodic table and identify elements that will exhibit similar chemical behavior

45. Prepare for the Activity
In groups of four, sort the Create a Table cards using the patterns you discovered in Lesson 9: Create a Table.

46. Prepare for the Activity (cont.)
Open up the card sort.

47. Prepare for the Activity (cont.)
The card sort table can be opened up to accommodate more elements.

48. Prepare for the Activity (cont.)
Evolution of the Periodic Table

49. Prepare for the Activity (cont.)
Add Mendeleyev’s remaining elements.

50. Prepare for the Activity (cont.)
Atomic Number: The consecutive whole numbers associated with the elements on the periodic table. The atomic number is equal to the number of protons in the atomic nucleus of an element.

51. Discussion Notes
There are horizontal (from left to right) and vertical (from top to bottom) patterns on the periodic table.
Grainy shading indicates nonmetals and metalloids, solid shading indicates metals.
Darker hues mean more reactivity.
A black outline indicates solids, a red outline indicates gases, and a green outline indicates liquids.

52. Discussion Notes (cont.)
Vocabulary Related to the Periodic Table
Group: A vertical column in the periodic table. Elements in a group have similar properties.
Period: Horizontal rows on the periodic table.
Alkali metals: The elements in Group 1A.
Alkaline earth metals: The elements in Group 2A.
Halogens: The elements in Group 7A.
Noble gases: The elements in Group 8A. They are called “noble” gases because they are not reactive.

53. Discussion Notes (cont.)
Main group elements: The elements in Groups 1A to 8A.
Transition elements: The elements in Groups 1B to 8B.
Lanthanides and actinides: The two rows of 14 elements each that are placed separately at the bottom of the periodic table.

54. Discussion Notes (cont.)
Metals: Elements that are excelled conductors of heat and electricity. They generally are shiny and malleable (flexible). They are found to the left of the stair-step line on the periodic table.
Nonmetals: Elements that are poor conductors of heat and electricity. They generally are dull and brittle. They are found to the right of the stair-step line.
Metalloids: The elements between the metals and nonmetals. They are found along the stair-step line.

55. Wrap Up
What information does the periodic table reveal about the elements?
Patterns repeat on the periodic table. The table is organized so elements in each column of the periodic table have similar properties.
The periodic table lists the name, symbol, and average atomic mass of each element.
Several groups of elements and some periods have specific names, such as halogens or noble gasses.
Metals are in the center and left, and nonmetals are at the top right; elements near the dividing line are considered metalloids.

56. Check-in
Look up silver, Ag, on your periodic table. Use these cards for Cu, copper, and Au, gold, to create a card for silver.