After completing these activities I am looking for you guys to communicate your understanding for the organization for the periodic table. So please consider the following [Bill Nye Reference]
In your own words describe how the periodic table is arranged, you may wish to include something about the groups and periods, electron configuration, valence electrons, and the different families.
For the second part, I want you to compare and contrast ions and atoms:
What is similar about atoms and ions of the same element
What is different about atoms and ions of the same element
Why do ions form?
How can you predict the charge on an ion by looking at valence electrons and location on the periodic table
Overall, I am looking for how well you understand these concepts, if you have any questions use your packets and notes and chem crunches, and don't be afraid to ask questions!!
1.Based on the information in your text on p158-160 (or another source that names the different groupings on the periodic table), “Name” the groupings of elements that you created on the last page.
2.Classify the four properties tested in this lab as either a physical property or chemical property. Explain your thinking.
3.a) State what is unique about elements that are “metalloids.”
b) Identify any elements among our seven that are metalloids.
c) List the names and symbols of all the metalloids.
4.When you look at a Periodic Table, you will notice that the seven elements we tested are all clustered near each other.
State the trend that appears to exist:
a) In terms of metallic character of elements, as you proceed from elements on the left to elements on the right in the Periodic Table.
b) In terms of metallic character of elements, as you proceed from elements near the top to elements near the bottom in the Periodic Table.
ENRICHMENT: Some elements, like lead (Pb), have symbols that due not seem to match their names. Pb is derived from the Latin name for lead, which is “plumbum.” This is due to the fact that this element was used in Roman times for making pipes for drinking water (“plumb”ing pipes). There are 10 other elements like this. Find one or more of them, and research why the symbol is what it is.
We have talked a bunch about physical and chemical changes now. What I would like you to do is to design a clear set of criteria that you can use to determine whether a change is physical or chemical.
In this process I want you to discuss the following:
What types of changes are chemical and what types are physical? (Come up with examples for each)
What types of evidence are you looking for in a physical change?
What types of evidence would convince you that a chemical change has occurred?
When you are stuck in a scenario where you are unsure, what other resources can you use to figure it out? A good example of this would be the sodium polyacrylate and water, what was it anyway?
Enrichment:
Find a video of a sweet physical or chemical change. Describe which it is. See if you can figure out how to embed a video into a blog post.
