The Periodic Table - 9/11-9/15

https://www.livescience.com/28507-element-groups.html


Summary:

This week we learned about the different families and groups of the periodic table and how they are classified. The periodic table is organized by the increasing atomic number or the number of protons. When you look at the periodic table, you can see that to the right, there is a "staircase." The elements that make up the staircase are metalloids, which are both metals and non-metals. Everything to the left of the staircase is a metal, and everything to the right is a non-metal.

Rows of the periodic table are called periods. The elements in a row have different chemical properties. However, in a row, there are the same energy levels. The columns, or "families" in the table have similar chemical & physical properties because they have the same number of outer electrons.These are called "families" because they are all similar, but not all the same element. 

There are 8 groups (or rows) in the periodic table that are named. The first group consists of alkali metals, which are very reactive. They also conduct electricity and have 1 electron in the outer shell. The second group is alkaline earth metals, which are reactive, but less then alkali metals, and have 2 electrons in the outer shell. The center of the periodic table is transition metals, which are good conductors of heat and electricity, easily form alloys, and are able to put 32 electrons in their second to last shell.

When you look at a periodic table, now we are at the second "part" or section after the transition metals. The third group is the boron family, which has 3 electrons in the outer shell and has mostly metals. Group #4 is the carbon family, which, as you have probably figured out has 4 electrons in the outer shell. This group is also unreactive. The fifth group is the Nitrogen family, with 5 valence electrons, can share electrons to create compounds. The sixth group is the Oxygen family, which has 6 valence electrons and is reactive. Group 7 is the halogens family which have 7 electrons in the outer shell and is very reactive. The last group consists of noble gases, which have 8 valence electrons and are never reactive.

SP7; Engaging in argument from evidence:

This week, I used evidence to engage in an argument to find out which element it was using various clues. I needed an explanation to defend the element that I thought was the correct one. I also had to collaborate with others so that we could all find the best explanation with evidence so that we could figure out what the correct answer was. We also looked in our notebooks and different assignments for evidence and possibilities of what might be the correct answer so support with explanations.

XCC: Patterns

A pattern that I observed in class when we were talking about the periodic table was how the elements are placed in a pattern depending on how reactive they are, what they are made of, the atomic number and more. The elements are placed depending on the number of protons, and go in a graduating order (1, 2, 3, 4, 5...) The columns are like "families" and all have similar properties. The rows have the same number of energy levels but are different. This pattern can be used to discover where the element is on the periodic table when we know its properties.

Multiplier:

This week, I was a wanderer. I made sure to share all of my ideas and what I learned with my table group. When we were solving castle Mendeleev, we worked together and shared our ideas to figure our together what the element name is. I did my best to contribute and help the team get to the exit of the castle by sharing and communicating my understandings and asking to hear what else might help us solve the clues.

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