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4.Atoms,Ions,Ionic Compounds.notebook March 27, 2015 TODAY: 1. Submit lab 2. Take up outstanding homework 3. Lesson: Atoms, Ions, & Ionic Compounds 4. Homework
4.Atoms,Ions,Ionic Compounds.notebook March 27, 2015
TODAY:
1. Submit lab2. Take up outstanding homework3. Lesson: Atoms, Ions, & Ionic
Compounds4. Homework
4.Atoms,Ions,Ionic Compounds.notebook March 27, 2015
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ATOMS
Let's look at a lithium atom...
Lithium has an atomic number of 3.This means it has 3 protons and 3 electrons.Protons carry a positive charge while electrons carry a negative charge.What is the overall charge of a lithium atom?
4.Atoms,Ions,Ionic Compounds.notebook March 27, 2015
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FORMATION OF AN ION
Every atom wants to become stable.An atom is stable if its outermost orbit is full.All atoms will try to give away electrons or gain electrons to try to become stable.
Do you think lithium would give away or take in electrons in order to become stable?
Why?
Any atom that does not have the same number of protons and electrons has an overall charge. These "charged atoms" are called "ions".
4.Atoms,Ions,Ionic Compounds.notebook March 27, 2015
IONS
1. Draw a BohrRutherford diagram of a lithium
a) ATOM b) ION
2. Draw a BohrRutherford diagram of a fluorine
a) ATOM b) ION
NOTE:METALS FORM POSITIVE (+) IONS.NONMETALS FORM NEGATIVE () IONS.
4.Atoms,Ions,Ionic Compounds.notebook March 27, 2015
3. Draw a BohrRutherford diagram of a Phosphorus
a) ATOM b) ION
4. magnesium:
4.Atoms,Ions,Ionic Compounds.notebook March 27, 2015
IONS
Metals form ions that are positively charged. The ions they form have names identical to the element. For example, magnesium forms magnesium ions.
Nonmetals form ions that are negatively charged. The ions they form have the ending of their name changed to "ide". For example, oxygen atoms form oxide ions while chlorine atoms form chloride ions.
Chemical symbols for ions include the charge.eg. Li+ or O2
4.Atoms,Ions,Ionic Compounds.notebook March 27, 2015
http://www.brainpop.com/science/matterandchemistry/ions/
4.Atoms,Ions,Ionic Compounds.notebook March 27, 2015
Introduction to IONIC COMPOUNDS
What do you think would happen if a lithium atom & a fluorine atom came close to each other....
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F 919
Lithium fluoride
4.Atoms,Ions,Ionic Compounds.notebook March 27, 2015
Read Chapter 5.5Answer #1-7 (pg. 177)
