Warm Up

Balance the following reactions:

1.__NaCl + __BeF2 --> __NaF + __BeCl2

2. __FeCl3 + __Be3(PO4)2 --> __BeCl2 + __FePO4

Warm Up

Balance the following reactions:

1._2_NaCl + __BeF2 --> _2_NaF + __BeCl2

2. 2_FeCl3 + _Be3(PO4)2 --> _3BeCl2 + _2FePO4

Types Of Chemical Reactions

8.2

Combination Reactions

A + B AB

Examples: S + O2 SO2

CaO + H2O → Ca(OH)2

Decomposition Reactions

AB A + B

Examples2H2O(I) → 2H2 + O2

2Cl2O5 (g) → 2Cl2 (g) + 5O2 (g)

Single Replacement Reaction

A + BC → AC + B

Example: Cu + 2AgNO3 → 2Ag + Cu(NO3)2

Br2 + 2KI → 2KBr + I2

Double Replacement Reactions

AX + BY → BX + AY

Example:HCl (aq) + NaOH (aq) → NaCl (aq) + H2O (l)

Combustion Reaction

• An element or compound reacts with an oxidizing element, such as oxygen.

• Probable products are CO2 and H2O

Examples: CH4 + 2 O2 → CO2 + 2 H2O + energy

2 H2 + O2 → 2 H2O(g) + heat

Rules for Predicting Products

• R+ S RS• RS R + S• T + RS TS + R

• R+S- + T+U- R+U- + T+S-

• CxHy + (x+y/4) O2 x CO2 + (y/2) H2O

RemindersMake sure that you look at what might

be formed and consider its state when predicting products

• Metals - form solids when on their own and in combination with nonmetals you must balance ionic charges

Mg compared to MgCl2

• Don’t forget that some non-metals will be anions in combination with metals, but covalent diatomic gasses when they are on their “own”

Cl2 compared to HCl

Complete the following equations:

Decomposition• NCl3

Single Replacement• Al + CuSO4

• Mg + HCl Double Replacement• Ba(NO3)2 + Na2SO4

*** Hint Nitrogen and Chlorine are diatomic gasses on their own **

*** Hint: Look at the ions you are working with!!!***

Complete the following equations:

Decomposition• NCl3 N2 + Cl2

Single Replacement• Al + CuSO4

• Mg + HCl Double Replacement• Ba(NO3)2 + Na2SO4

Complete the following equations:

Decomposition• NCl3 N2 + Cl2

Single Replacement• Al + CuSO4 Al2(SO4)3 + Cu• Mg + HCl Double Replacement• Ba(NO3)2 + Na2SO4

Complete the following equations:

Decomposition• NCl3 N2 + Cl2

Single Replacement• Al + CuSO4 Al2(SO4)3 + Cu

• Mg + HCl H2 + MgCl2

Double Replacement• Ba(NO3)2 + Na2SO4

Complete the following equations:

Decomposition• NCl3 N2 + Cl2

Single Replacement• Al + CuSO4 Al2(SO4)3 + Cu

• Mg + HCl H2 + MgCl2

Double Replacement• Ba(NO3)2 + Na2SO4 BaSO4 + NaNO3

The End

Start Working on HW if time permits