Activator New Seating Chart When you get to your new seat, take out your notes from Friday and be able to tell me one new thing that you learned from that lesson.

The Periodic Table of Elements September 5, 2017

Objective Students will understand how the periodic table is organized and how to use it to describe elements.

Connection What did we learn about on Friday? Well, today we are going to learn… About how all atoms are made of the elements That the elements are all listed on the periodic table How we can use the periodic table to learn about the atoms of different elements

What is the Periodic Table? The Periodic Table is an organized arrangement of all of the known chemical elements that make up our universe. Each element listed on the table is made of unique atoms, and all atoms of that element have the exact same properties and look and act the same way. In science class, we use the Periodic Table to learn about the elements and we can know a lot about them just by looking at the table. Video

Periodic Table The Periodic Table is very well organized. The columns (vertical/up and down) are called groups or families. The rows (horizontal/side to side) are called periods. Finally, all elements are listed in order by their atomic number.

Periodic Table Elements that are located near each other on the table (for example, in the same group or period) have similar properties and most likely react the same way in experiments. Take a few minutes to number your groups (1- 18) and your periods (1- 7) on your Periodic Table.

Periodic Table The table also organized by metals, non-metals, and metalloids (not quite metal but not quite non-metal) Take a few minutes to color code your table. Make sure you can still read it!

Periodic Table The following information can be found on the Periodic Table: Atomic Number Element Symbol Element Name Atomic Mass

Each square tells you: The Atomic Number – or the number of protons (and electrons) that one atom of that element has The Chemical Symbol – usually only one or two letters, and that is how the element is abbreviated The Atomic Mass – almost always a decimal because it is an average atomic mass for one atom of that element Element Name

Practice We are going to label and practice using our Periodic Tables. Make sure you have done the following: Label the rows as Periods Label the columns as Groups Number the periods by starting at the top and working our way down (1-7) Number the groups by starting at the left and working across to the right (1-18)

Practice Let’s find the following: Name Symbol Atomic # Atomic Mass # of Protons # of Electrons # of Neutrons Group Period Metal/Non-Metal Oxygen 3 18 1

Practice Now you work on your own: Name Symbol Atomic # Atomic Mass # of Protons # of Electrons # of Neutrons Group Period Metal/Non-Metal Na 11 13 3 10 Boron B 2 12 15 When you have finished, you can choose any 3 elements that you want to know about, and add them to your table.

Activator – Pop Quiz! Answer the questions on the slip of paper I gave you as you walked in. It will be graded by your partner when we are finished. What are the electrical charges of protons, neutrons, and electrons? Answer: Protons – positive, neutrons – neutral, electrons - negative What is the mass of protons, neutrons, and electrons? Answer: Protons – 1 AMU, neutrons – 1 AMU, electrons – 0.001 AMU Where are protons, neutrons, and electrons located in an atom? Answer: Protons and neutrons are inside the nucleus (the middle), electrons are around the outside of the nucleus.

The Periodic Table of Elements – Day 2 September 6, 2017

Review From Yesterday Horizontal rows are called periods, and should be number 1-7 Vertical columns are called groups or families, and should be numbered 1-18 Atomic number tells you the number of protons (and electrons) You can find the number of neutrons by subtracting the number of protons from the atomic mass number (remember to round!)

Practice as a Class

Individual Practice You will get a printed out copy of a chart to be filled in. Use your Periodic Table to identify each piece of information about the elements. At the bottom, you have a chance to find the information for any three elements that you choose. On the back, please draw four atoms of elements (you can choose which ones) from the chart. They should be colored and show the correct number of protons, neutrons, and electrons for each element.

Individual Practice - Expectations Working Independently – If you have questions, raise your hand. This is my opportunity to see if you are meeting the objective! Chart should be filled out completely, no blank spots! Pictures you should neat and colored to the best of your ability! Make sure you are submitting your best quality work!

Homework Finish your chart and atomic drawings if you have not already. The following students still need to turn in their Lab Safety Contracts: Springfield: WNEU: Elms: UMass: Jovanni S (missing) Emilie G. (sign) Carlos M (missing) Michael B (missing) Arian M. (sign) Zavier R (missing) Joshua F (missing) Debora (sign) Gian R (missing) Amya G (missing) Delia C. (missing) Justin P (missing) Malissa N. (missing) Joniel R (missing) Thomas W. (missing) Janiah S (missing)

Exit Ticket Find a partner and bring your periodic table with you. Using groups and periods, give your partner the location of an element. If they can find it, have them tell you the atomic number, the name, the symbol, and the atomic mass of that element. Then switch roles and do it the other way around.