SOL 3

Chemistry SOL Review Day 2

UNIT 6 – Ionic BondingThe electrons in the outermost level or

shell are called the ________________ electrons.

 ValenceAtoms want to be stable, which means

they try to achieve a ____________________ configuration.

 Noble GasTo become an ion, atoms will

______________ or ________________ electrons.

Gain or lose

UNIT 6 – Ionic BondingWhat kind of ion does Calcium become?

2+A bromine ion (Br-) has ________ electrons and _______ protons.

 36, 35A magnesium ion (Mg2+) has _________ electrons and _______ protons.

10, 12

UNIT 6 – Ionic BondingA cation is a _________ charged ion. PositivelyAn anion is a _____ charged ion. NegativelyIonic bonds form between ___ &_____.

Positive & negative ionsMetals & Nonmetals

UNIT 6 – Ionic BondingIonic compounds have ________ melting points because of the strong forces within.

HighAn alloy is a mixture of two __________.

Metals

UNIT 6 – Ionic BondingName the following ionic compounds.KBr K2O MgBr2

Cu(OH)2

Ca3(PO4)2

UNIT 6 – Ionic BondingWrite formulas for the following ionic compounds.Copper (I) oxygenAluminum oxideLead (IV) sulfideLead (IV) nitrideLithium chloride

2009 SOL QuestionHow many electrons does the iron ion have when it forms the ionic compound FeCl3?

F 20G 23.H 26J 29

UNIT 7 – Covalent BondingWhen two nonmetals join together, they form a covalent bond by __ their electrons.

SharingMost atoms that form covalent bonds connect so each atom has _____ valence electrons.

8

UNIT 7 – Covalent BondingName the 7 diatomic elementsName the following molecular compounds.N2OCO2

C2H6

H2SN2O4

UNIT 7 – Covalent BondingWrite the chemical formula for each of the following molecular compounds.Carbon monoxideDihydrogen monoxidePhosphorus trichlorideCarbon tetrahydrideDicarbon tetrahydride

UNIT 7 – Covalent BondingDraw the Lewis structure or structural formula of each of the following and determine its shape.SiCl4SCl2PF3

AsF5

BF3

UNIT 7 – Covalent BondingIf there is a LARGE difference in

electronegativity, it will result in a ____________ bond.

IonicA medium difference in electronegativity

will result in a _________ covalent bond.PolarA very small difference will result in a

____ covalent bond.Nonpolar

UNIT 8 – Chemical ReactionsThe chemicals used to start a chemical reaction are called the _____

ReactantsThe chemicals that come out of a reaction are the _____

ProductsIf something is written above the arrow, it is a _____

Catalyst

UNIT 8 – Chemical ReactionsBalance the following reactions.a. CuCl2 + H2S CuS + HCl

B. Fe + O2 Fe2O3

c. P + O2 P4O10

d. Na + H2O H2 + NaOHe. FeCl3 + CaOH Fe(OH)3 + CaCl

UNIT 8 – Chemical ReactionsClassify the following reactions (synthesis, decomp, SR, DR, or combustion)

4Fe + 3O2 2Fe2O3

2C6H14 + 19 O2 14 H2O + 12 CO2

2AlCl3 2Al + 3 Cl2Zn + H2SO4 Zn SO4 + H2

AgNO3 + NaCl AgCl + NaNO3

UNIT 9 – Molar ConversionsThe _____ is the lowest whole number ratio of elements in a compound.

Empirical formulaThe __________ formula is the actual ratio of elements in a compound.

Molecular formula

UNIT 9 – Molar ConversionsWhat is the empirical formula of C6H12O6?

 CH2OWhat is the empirical formula of C3H6? CH2A compound has an empirical formula of ClCH2 and a molar mass of 148.44 g/mol. What is its molecular formula?

Cl3C3H6

UNIT 9 – Molar ConversionsCalculate the percent composition of sodium in sodium chloride (NaCl).

23/(23 + 35.5) = 39%1 mole = how many particles?6.022 x 1023

How many atoms of oxygen are in a 17.3 g sample?

6.51 x 1023