Breaking the code

Periodic Table Fundamentals

Chem catalyst

• Using the card sort chart or your cards:

a. Look back at Mendeleev’s chart (pg 29). Where did he place Cu? (Cu’s atomic weight is 63,it reacts very slowly with water, is a shiny metal)

b. Where would you place Cu in your card table? Is it the same as Mendeleev? Explain your answer

Unit 1 • Investigation II

Unit 1 • Investigation II

The Big Question

–How can you predict properties of elements using a periodic table?

Unit 1 • Investigation II

You will be able to:

– Interpret some of the information given in the periodic table.

CONNECTION BETWEEN CARD TABLE AND THE MODERN PERIODIC TABLE

Unit 1 • Investigation II

Notes

(cont.)

Unit 1 • Investigation II

Notes (cont.)

(cont.)

Unit 1 • Investigation II

Notes (cont.)

(cont.)

Unit 1 • Investigation II

– The elements in the middle of the table are referred to as the transition elements, or the transition metals.

Notes (cont.)

Unit 1 • Investigation II

Activity

Purpose: • This lesson will help to identify many of the

patterns of element characteristics that are contained in the periodic table of the elements.

• This lesson also provides names for different collections of elements with similar characteristics, and the manner of naming a specific spot in the periodic table (cont.)

Activity1. Students will be broken up into groups of 3

2. Each student needs a copy of a periodic table and their comp book

3. Spaced around the room is information on a number of topics.

4. Each group divides the topics amongst themselves, and gathers information on those topics by moving around the room to papers with their topics

5. Students then report back to their groups to share and explain their information to the other members

6. Information on groups, families, periods must be shown on the copy of the periodic table through the use of color

Topics

1. Which Elements are liquid at room temp?2. Which elements are gases at room temp?3. Which elements are defined as a metal, what

are their common characteristics?4. Which elements are defined as a non-metal,

what are their common characteristics?5. Which elements are defined as a metalloid,

what are their common characteristics

Topics

6. What on the periodic table, is identified by the period, and do any periods have a name?

7. What on the periodic table is identified by the group number, and what is their number range?

8. Who are the transition metals, and what are their common characteristics?

9. Who are the Alkali metals and what are their common characteristics?

10. Who are the Halogens and what are their common characteristics?

Topics

11. Who are the Noble gases and what are their common characteristics?

12. Who are the Alkaline Earth Metals and how reactive are they?

13.Who are the Lanthanides, and what is their group number?

14.Who are the Actinides, and which are artificially created

15.Which elements are radioactive in all forms?

Activity

• After all members of the group have placed the info in their composition books and colored their charts, Each group will complete the Lab questions.

Unit 1 • Investigation II

(cont.)

Answer the questions on page 33-34 in lab book

Write each question and your response.

• Include the “making sense” question and “if you finish early”

• Leave some space for additions or alterations to your answer

Question #1

• Using the card sort poster;

• Make a list of as many patterns as you can find from the card sort poster that occur horizontally

• Size of circle decreases left to right

Question #2

• Make a list of as many trends as you can find from the card sort poster that occur vertically.

• Color• Atomic mass increases

Question #3

• Which trend or pattern does each of the following diagrams describe? Explain

• Down arrow and up arrow: REACTIVITY, the darker the hue the more reactive

• Just Down Arrow: SOFTNESS, Circle Size

• Arrow left to right: # of Spikes, atomic mass

Question #4

• Where are the metals located on the periodic table? Explain

• Towards the left of the table in general

Question #5

• Is copper, Cu, a metal or nonmetal? Explain your thinking

• Cu is a metal

• Exists somewhere between Ca and Ga, both metals

Question #6

• The elements inserted into the card sort from Mendeleyev’s table are called transition elements. Do you expect the elements to be solids, liquids or gases? Explain.

• Most likely solids all of column 2 and most of column 3 are solids

Question #7

• Where are most of the gases located on the periodic table?

• Most gases are on the upper right of chart

Question #8

• Is thallium, Tl, a solid, liquid, or gas

• solid

Question #9

• In what areas do you find the most highly reactive elements?

• Lower left (IA) and Upper Right (VII A)

Question #10

• How would you expect cesium, Cs to react with water? Explain

• More explosively than rubidium

Question #11

• Find the element with the atomic weight 137.3. If there was a card for this element what would it probably say in the lower left corner?

• Ba Barium • Reacts explosively with water

Question #12

• Place the following in order of most reactive to least reactive.

• Rubidium, Rb• Neon, Ne• Silicon, Si• Calcium, Ca

• Rb• Ca• Si• Ne

Question #13

• Elements combine to form compounds. For the compound listed, specify whether two metals, a metal and a nonmetal, or two nonmetals were combined

• NaCl

Question #14

• Elements combine to form compounds. For the compound listed, specify whether metals, metals and a nonmetals, or nonmetals were combined

• CH4O2

Question #15

• Elements combine to form compounds. For the compound listed, specify whether two metals, a metal and a nonmetal, or two nonmetals were combined

• CuSn

Question #16

• The elements copper and gold are both relatively unreactive. It is easy to bend and shape both metals. Is the similarity in their properties consistent with their locations on the periodic table? Explain

• They are in the same column (group)

Question #17

• Create a card for the element lead, Pb

• Information in all four corners, atomic mass number and circle with sticks

Lead Soft, Silver gray, solid

metal

Reacts slowly with oxygen

Found in PbH4

Unit 1 • Investigation II

Making Sense

– The elements copper and gold are both relatively unreactive. It is easy to bend and shape both metals. Both are used to make coins and jewelry. Is the similarity in their properties consistent with their locations on the periodic table? Explain why or why not.

Unit 1 • Investigation II

Notes

Class Discussion

Answer the check in on pg 34-35

Unit 1 • Investigation II

Check-In–Use the cards for Cu, copper, and Au,

gold, to describe all you can about the element silver, Ag.

shiny, yellowmetal

found inAuCl

notvery reactive

Copper shiny, reddishmetal

found inCuCl

reactsslowly in air

Gold

Cu63.5

Au197.0

Unit 1 • Investigation II

Wrap-Up

– Elements in each column of the periodic table have similar properties.–We can predict the characteristics of a

missing element based on the qualities of the elements found adjacent to it in a periodic table.