Final Exam Review Bo Cummins (In ionic compounds and molecular…
Final Exam Review
What is the difference between cations and anions? which of the them gain electrons and which lose them
Cation-- postive-- lose electrons
Anation-- negative-- gain electrons
What is electromagnetically?
is to attract electrons
(left side) lose(small)-- Periodic Table-- (big) fain (right side)
What are valance electrons
electrons in the highest energy level (7)
When atoms "give up" electrons, what charge do they take? when atoms "gain" electrons, what charge do they take?
Atoms give up-- positive
Atoms gain-- negative
What are properties of Ionic Compounds
metal with a non metal. very well organized
high melting point and high boiling point
In ionic compounds and molecular compounds, the second element will always end with what ending?
IDE example: sodium chloride (NaCl), Calcium Oxide
non metal with a non metal
Co2- carbon dioxide
What is the octet rule
rule of 8
What is a Ionic Compound
Metal and Non metal
What is a Molecular Compound
Non Metal and Non Metal
What are polyatomic ions
more than 1 element combined and having a net charge
How many electrons are shared in a single covalent bond? double covalent bond? triple covalent bond?
single-2 double-4 tripple-6
What is a coordinate covalent bond
1 atom contributes 2 electrons to complete the octect rules
What is VSEPR theory?
Valence Shell Electron Pair Repulsion
dictates the shape of a molecule
What is a polar bond?
Bond between 2 non metals with different electroneagativities
Polyatomic ions end in one of 2 types of endings
ite and ate
hydroxide is an exception
What are chemical reactions? What are the 5 different signs that a chemical reaction has
color in change 2. precipitate 3. temperature change 4. formation of gas 5. smell
The changes in a substance takes place chemically
What is the law of conservation of mass
change from 1 form to another