Rushed day!! Lessons 17, 18, 19

Lesson 17: Today we explored more about our flame test on Friday. The metal in each element in the Chemical formula always appeared to be responsible for the flame colors. However, only certain elements produce colorful flames. Lesson 17 basically just covered what I just said and included the lab!

Lesson 18: Lesson 18 we really learned more in depth about atoms. For example, a shell model is the surface area represents an area where an electron or a group of electrons most likely be. Also, the atomic number of an element is the same as the total number of electrons. The period (row) number of the element is the same as the number of electron shells. All of this seems a bit complicates, but it is a bit easier than it seems! Moreover, the main group of elements, is the group number of electrons in the outermost shell. Some vocab words include valence electrons which is the electrons located in the outermost electron shell. And core electrons are all the other electrons in the atom besides the valance electrons!

Lesson 19: Lastly today we went over lesson 19, something important to know is that metal atoms transfer electrons to nonmetal atoms when they form compounds. More vocab words! An ion is an atom that has a + or - charge because it has lost or gained electrons. An ion charge is is noted with a superscript. For example Li+1 or F1-. A cation is an ion with a positive charge usually metals, and anions have a negative charge usually nonmetals!

Homework:

 

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