Periodic Table and Ions 3.4 and 3.5 Group 8 Period 5

Periodic Table

Alkali Metals are in group 1. Alkali Earth Metals are in group 2. Transition Metals are in group 3 through group 12. Halogens are in group 7 (17). Noble Gases are in group 8 (18). Metalloids are along the stairs. ( Silicon, Germanium, Arsenic, Antimony, Tellurium, Polonium, and Astatine. )

Diatomic Molecules Definition – Molecules made up of 2 atoms. Examples: H 2, N 2, O 2, F 2, Cl 2, Br 2, and I 2.

Ions and Charges Definitions: Ions – an atom that has different number of electrons Cations – Positively charged ions Anion – Negatively charged ions When an atom gains an electron, it becomes an anion. When an atom loses an electron, it becomes a cation.

Ionic Compounds Definition: When ever a compound forms through a metal and nonmetal it is called an ionic compound. Example:

Ionic Formulas Definition: When the chemical compounds have a net charge of 0, and both has to be a negative and positive. Example:

Quiz Questions 1.What is the definition of an ion and how is it formed? 2.Whats the definition of an anion and cation and how are they formed? 3. Why can’t you have a net charge of 1 or more? Explain. 4. Can an ionic compound be 2 metals or 2 nonmetals? Explain. 5. Is it possible to have 2 anions or 2 cations in an ionic compound?

Quiz Questions Part 2 6. Why can’t a solid conduct electricity? Explain. 7. What elements are metalloids? 8. What elements are nonmetals? 9. What are the 4 physical properties of metals? 10. What are all the elements that exist as diatomic molecules in their element form?

Quiz Answers 1. An Ions is an atom that has a charge, you create an ion by gaining or loosing an electron. 2. An anion is a negatively charged ion and you get this by gaining electrons. A cation is a positively charged ion you get this by loosing an electron. 3. You can’t have a net charge of more than 1 or more because it has to equal to zero.

Quiz Answers Part 2 4. No, because it is always expected that a metal and nonmetal together contains ions. 5. No, because it wouldn’t work out to well since you’ll end up having to multiply negative numbers instead of positive ones. 6. Solids are unable to conduct electricity because it is tightly held together, and is unable to move freely.

Quiz Answers Part 3 7. Metalloids: Silicon, Germanium, Arsenic, Antimony, Tellurium, Polonium, and Astatine. 8. Hydrogen, Carbon, Nitrogen, Oxygen, Phosphorus, Sulfur, and Selenium. 9. They are good conductors towards electricity, Malleable, Ductile, and is Lustrous. 10. Hydrogen, Nitrogen, Oxygen, Fluorine, Chlorine, Bromine, and Iodine.

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