1. Which type of reaction usually requires energy input?

Day 4 5-8

Balance:

C4H10(g) + O2(g) CO2(g) + H2O(g)

Balance:

H2SO3 + Mg(OH)2 MgSO3 + H2O

http://education.jlab.org/elementbalancing/index.html - 15 tries

http://www.files.chem.vt.edu/RVGS/ACT/notes/scripts/bal_eq1.html

http://www.sciencegeek.net/Chemistry/taters/EquationBalancing.htm - bonus

Go to wiki and click links – shssci.wikispaces.com:

C4H8(g) + O2(g) CO2(g) + H2O(g)

1. Balance:

2. When sodium reacts w/ chlorine to produce sodium chloride, what type of reaction takes place?

Day 6 5-10

Keystone Exam Schedule

Progress Reports

Types of Chemical EquationsSingle-Replacement ReactionsSingle-replacement reaction OR displacement reaction – one element replaces a similar element in a compound.

A + BX AX + B

A, B, X, and Y = eles.;

AX, BX, and BY = cmpds.

Example: Fe(s) + CuSO4(aq) FeSO4(aq) + Cu(s)

A BX AX B

Y + BX BY + X

Types of Chemical EquationsSingle-replacement Reactions

Examples:

- a metal with another metal

- H in water with a metal

- H in an acid with a metal

- Halogens ***

Types of Chemical EquationsSingle-replacement Reactions

Types of Chemical EquationsDouble-replacement ReactionsDouble-replacement reactions – the ions of 2 cmpds. exchange places in an aqueous sltn. to form 2 new cmpds.

AX + BY AY + BX

A, B, X, and Y = ions

Example:

2KI(aq) + Pb(NO3)2(aq) PbI2(s) + 2KNO3(aq)

AX BY BX AY

+ - + - + - + -

Types of Chemical EquationsDouble-replacement Reactions

In the margin:double reps. can form precipitatesmost acid-base reactions

What type of reaction is:

AX + BY → AY + BX

compound

compound

compoundcompound

What type of reaction is:

X + BY → Y + BX

element

compound

elementcompound

What type of reaction is:

X + BY → BYX

element

compound

compound

What type of reaction is:

X + Y → XY

element

element

compound

What type of reaction is:

X + BY → Y + BX

element

compound

elementcompound

What type of reaction is:

BY → Y + B

compoundelement

element

http://education.jlab.org/elementbalancing/index.html - 15 tries

http://www.files.chem.vt.edu/RVGS/ACT/notes/scripts/bal_eq1.html

http://www.sciencegeek.net/Chemistry/taters/EquationBalancing.htm - bonus

Go to wiki and click links – shssci.wikispaces.com:

Single replacement reaction

Products

Coefficients

Conservation of matter

Mg3(PO4)2

Diatomic gas

Synthesis reaction

Chemical reaction

Reactants

Decomposition reaction

Review section 11.2 AND complete #s 12-14 on page 35915 on page 36118 on page 36517 on page 36320-24 on page 367

Due Thursday 5-3

What Can You Tell Me? – due tomorrow

Lab Activity

A + B AB

Example # 1: 2H2(g) + O2(g) 2H2O(g) A B AB

Example # 2: 2H2SO3(aq) + O2(g) 2H2SO4(aq)

A B AB

Example # 3: CaO(s) + SO2(g) CaSO3(s)

A B AB

AB A + B

Example: 2H2O(l) 2H2(g) + O2(g) AB A B

electricity

A + BX AX + B

Y + BX BY + X

Example: Fe(s) + CuSO4(aq) FeSO4(aq) + Cu(s)

A BX AX B

AX + BY AY + BX+ - + - + - + -

Example:

2KI(aq) + Pb(NO3)2(aq) PbI2(s) + 2KNO3(aq)

AX BY BX AY

How is a synthesis reaction different from a decomposition reaction?

Day 2 4-30

How does the Law of Conservation of Matter apply to chemical reactions?

How do substances react to form products?

Day 2 4-30