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level: Level 2

Questions and Answers List

level questions: Level 2

Question	Answer
Three types of Bonds	Ionic, Metallic and Covalent
The type of force that holds two or more atoms together. It is the attraction between positive nucleus and their negative electrons	Chemical Bond
Three types of Covalent bond	Single bond, Double bond and Triple bond
This is the reaction between a metal (CATION) and a non-metal (ANION) where in the cation transfer it valence electrons to the anion due to electrostatic force M order to make it stable (OCTET RULE). Strong bonding	Ionic Bonding
Properties of Ionic Bonding	Hard, High Meting Boiling Point and Brittle
The kind of bonding between metallic elements which the valence electrons can move freely from an atom to another.	Metallic Bonding
Metallic Bonding. The kind of bonding between metallic elements which the valence electrons can move freely from an atom to another. Since they can move freely they are called ____________	Decolized Electrons
Properties of Metallic Bond	High Melting and Boiling points - Electrical and heat conductor
Example of metals elements	Lithium, Magnesium and Sodium
Is the result of chemical bonding of elements that share pairs of valence electrons.	Covalent Bond
These bond are usually formed between non-metals elements	Covalent Bonding
This type of Covalent bond is formed when two atoms bond and share a single pair of electron	Single Bond
A type of Covalent Bond in which the two electron pairs are shared between two atoms. Each atoms contributes two electrons to the bond	Double Bonds
A Covalent Bond in which three electron pairs are shared between two atoms	Triple Bonds
T or F In triple bonds, their valence electrons are associated with how many pairs they can create.	True
Are the strongest type of bonds in the Covalent Bonding	Sigma
Are the weaker bonds, they are formed when parallel orbitals overlapped to share the electrons	Pi Bonds
T or F Positive ions formed when metal atoms lose electrons	True
T or F Negative ions formed when non-metal atoms gain electrons	True
T or F Anion names end in - ide	True
A compound that results when a metal reacts with a non-metal to forms ions called Cations and Anions	Ionic Compound
Binary means __________	Two Elements
Ionic means ____________	A metal and a non-metal (or cation and anion)
T or F Charges must be balance so compound charge is neutral	True
Tightly bond groups of atoms that behave as a unit and carry a charge	Polyatomic Ions
Ternary means __________	Three different elements
Composed of molecules in which elements share electrons	Molecular Compounds
T or F Molecular compounds usually composed of two non-metals	True
T or F Acids are named based on their Anion	True
T or F Most strong bases contain hydroxide, a polyatomic ion	True
Electronegavity (EN) difference > 2.0	Ionic bonds
EN difference is between .21 and 1.99	Polar covalent bonds
EN difference is < .20	Non-polar covalent bonds
T or F 0.4 and below is Non-polar	True
T or F 0.5 and above is Polar	True
It is a chemical change in which one or more substances are destroyed, and one or more new substances are created	Chemical Reaction
Substances that are destroyed by chemical change	Reactants
Substances are created by the chemical change (new bonds form)	Products
The numbers proceeding the chemical formula. They are used to balance the reaction	Coefficients
The numbers within the formula	Subscripts
Single uncombined element replaces another element in an Ionic compound	Singe Displacement Reaction
General Formula of Single displacement reaction	A +BC --- AC + B
Parts of 2 acqueous ionic compounds switch places to form two new compounds	Double Displacement Reaction
General Formula of Double displacement reaction	AB + CD --- AD + CB
Two or more simple substances (the reactants) to form a more complex substance (the product)	Synthesis Reaction
General Formula of Synthesis reaction	A + B --- AB
Produces two or more elements and or/ compounds	Decomposition Reactions
General Formula of Decomposition reactions	AB --- A + B