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As you come in,

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As you come in, Materials: Paper, periodic table, and pencil for the test Plan: Complete the Unit Four Bonding test Read the Chemical Literacy #4 article and respond ... – PowerPoint PPT presentation

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Title: As you come in,


1
As you come in,
  • Materials
  • Paper, periodic table, and pencil for the test
  • Plan
  • Complete the Unit Four Bonding test
  • Read the Chemical Literacy 4 article and respond
    to the questions. (due tomorrow)
  • Go to Edmodo, and begin the assignments.
  • DUE TOMORROW Balancing Equations note-taking
    guide
  • DUE THURSDAY Types of Equations note-taking
    guide
  • DUE FRIDAY Predicting Products note-taking
    guide
  • Begin writing chemical equations on the Writing
    Equations from Word Equations handout.

2
As you come in,
  • Materials
  • Chemical Literacy Answers
  • Balancing Equations Note-taking Guide
  • Practice Packet (pick up at front)
  • Periodic table and paper for notes
  • Plan
  • Learn to write and balance chemical equations
  • Complete the Writing Equations from Word
    Equations handout
  • Continue practicing handouts listed on 1c of
    SLA list
  • Tonight
  • Go to Edmodo.
  • DUE TOMORROW Types of Equations note-taking
    guide
  • DUE FRIDAY Predicting Products note-taking guide

3
Chemical Reactions
  • Process by which the atoms of one or more
    substances are rearranged to form different
    substances
  • Law of Conservation of Matter Matter is not
    created or destroyed during a chemical reaction.

4
Writing Chemical Equations
  • Video Example 1
  • Combustion of H2 gas
  • Description Hydrogen gas burns in oxygen gas to
    produce water vapor.
  • Unbalanced equation
  • Read a description of the reaction
  • Note what is reacted with what
  • Note what is yielded or produced
  • Write formulas for each compound
  • Use to represent and
  • Use ? to represent produces or yields
  • Include states of matter where available
  • (s) solid
  • (l) liquid
  • (g) gas
  • (aq) dissolved in water
  • Video Example 2
  • Combustion of methane gas
  • Description Methane gas burns in oxygen gas to
    produce carbon dioxide and water vapor.
  • Unbalanced equation

5
Balancing Chemical Equations
  • Video Example 1
  • Combustion of H2 gas
  • Unbalanced equation
  • H2 O2 ? H2O
  • Balanced equation
  • Write the skeleton equation.
  • BE SURE THE FORMULAS ARE WRITTEN CORRECTLY.
  • Inventory reactants
  • Inventory products
  • Insert coefficients to make atoms of each element
    equal on both sides of the equation
  • Reduce the coefficients if possible
  • Video Example 2
  • Combustion of methane gas
  • Unbalanced equation
  • CH4 O2 ? CO2 H2O
  • Balanced equation

6
Guided Example
  • Sodium carbonate reacts with chromium (III)
    chloride to produce sodium chloride and chromium
    (III) carbonate.
  • Unbalanced Equation
  • Na2CO3 CrCl3 ? NaCl Cr2(CO3)3
  • Balanced Equation
  • 3Na2CO3 2CrCl3 ? 6NaCl Cr2(CO3)3

7
Writing Equations from Word Equations handout
  • Work with a partner to write and balance
    equations.
  • Take 10 minutes to write and balance as many as
    possible.
  • Use a colored pencil or pen to correct your
    mistakes.

8
Writing Balancing Equations
  1. Zn Pb(NO3)2 --gt Zn(NO3)2 Pb
  2. 2 AlBr3 3 Cl2 --gt 2 AlCl3 3 Br2
  3. 2 Na3PO4 3 CaCl2 --gt Ca3(PO4)2 6 NaCl
  4. 2 K Cl2 --gt 2 KCl
  5. 2 Al 6 HCl --gt 2 AlCl3 3 H2
  6. 3 Ca(OH)2 2 H3PO4 --gt Ca3(PO4)2 6 H2O
  7. Cu 2 H2SO4 --gt CuSO4 2 H2O SO2
  8. 2 H2 2 NO --gt 2 H2O N2

9
a
As you come in,
  • Materials
  • Types of Reactions Note-taking Guide
  • Periodic table and paper for notes
  • Plan
  • Balancing more advanced equations
  • Learn about types of equations
  • Practice identifying types of equations and
    writing equations
  • Practice balancing for tomorrows quiz
  • Tonight
  • Go to Edmodo.
  • DUE TOMORROW Predicting Products note-taking
    guide
  • Practice balancing equations for tomorrows quiz!

10
Copper and sulfuric acid react to form copper
(II) sulfate and water and sulfur dioxide.
Difficult Equations to Balance
Cu 2 H2SO4 --gt CuSO4 2 H2O SO2
11
5 Types of Chemical Reactions
  • Synthesis A B ? AB
  • Combustion CxHy O2 ? CO2 H2O
  • Decomposition AB ? A B
  • Double-Replacement AX BY ? AY BX
  • Single-Replacement A BX ? B AX

Five Types of Reactions Clip
12
Identify the Type of Reaction
  1. Zn Pb(NO3)2 --gt Zn(NO3)2 Pb
  2. 2KClO3 ? 2KCl 3 O2
  3. 2 AlBr3 3 Cl2 --gt 2 AlCl3 3 Br2
  4. 2 Na3PO4 3 CaCl2 --gt Ca3(PO4)2 6 NaCl
  5. 2 K Cl2 --gt 2 KCl
  6. 2 Al 6 HCl --gt 2 AlCl3 3 H2
  7. CH4 2O2 ? CO2 2H2O
  8. 3 Ca(OH)2 2 H3PO4 --gt Ca3(PO4)2 6 H2O

13
Single Replacement ReactionsSPECIAL! MORE TO
COME!
  • A BX --gt AX B
  • A metal will not always replace another metal.
    The reactivity of the metal is important to
    consider.
  • Reaction More active metal replaces a less
    active metal.
  • No Reaction A less active metal will not
    replace a more active metal.
  • Use the metal activity series to determine if
    single replacement reactions occur.
  • Find the element who is alone in the reactants on
    the series.
  • Identify the element that is most similar to it
    in the reactant compound.
  • The LONE element must be HIGHER than the compound
    element.

14
Long worksheet 26-50
Work with a partner to Identify type of reaction
and write equations.
  • Take 10 minutes to identify types and write as
    many as possible.
  • Use a colored pencil or pen to correct your
    mistakes.

15
Balancing Chemical Equations handout
Work with a partner to Balance the equations.
Your quiz will be similar to this tomorrow.
  • Take 10 minutes to balance as many as possible.
  • Use a colored pencil or pen to correct your
    mistakes.

16
As you come in,
  • Materials
  • Paper for quiz
  • Predicting Products note-taking guide
  • Plan
  • Balancing Equations Quiz (TIME LIMIT 30
    minutes)
  • Practice writing, balancing, and identifying
    types of reactions
  • Learn to predict the products of double and
    single replacement reactions
  • Discovery Lab Indicators of a Chemical Reaction
  • Tonight
  • Go to Edmodo.
  • DUE MONDAY Net Ionic Equations note-taking guide
  • Practice identifying the types reactions for
    Mondays quiz!

17
AFTER YOUR QUIZ
  • Write, balance, and identify the type of reaction
    for the following on your LONG worksheet
  • 26-50
  • (as many as you can)

18
Predicting Products States of Matter
  • Expectations
  • To predict the products of DOUBLE REPLACEMENT and
    SINGLE REPLACEMENT reactions
  • To use the Solubility Rules to predict the states
    of matter of your products

19
Predicting Products States of Matter for DOUBLE
REPLACEMENT REACTIONS
  • Tips to remember
  • AX BY ?
  • Metals () always come first!
  • Criss-cross to get subscripts.
  • Deal with number problems by balancing at the end.
  • Video Example 2
  • Potassium chromate and silver nitrate
  • Reactant formulas
  • K2CrO4 AgNO3 ? TIP Label each element
    with its charge
  • Unbalanced Equation
  • K2CrO4 AgNO3 ? KNO3 Ag2CrO4

Lets add states of matter.
20
Last Question on Note-taking Guide
  • DOUBLE REPLACEMENT EXAMPLE
  • Zinc chloride ammonium sulfide ?
  • Reactant formulas
  • ZnCl2 (NH4)2S ?
  • Unbalanced equation
  • ZnCl2 (NH4)2S ? ZnS NH4Cl
  • Balanced equation
  • ZnCl2 (NH4)2S ? ZnS 2NH4Cl

Lets add states of matter.
21
As you come in,
  • Materials
  • Practice packet
  • Predicting Products note-taking guide
  • Discovering the Indicators of a Reaction lab
  • Plan
  • Types of Reactions Quiz (TIME LIMIT 15 minutes)
  • Predicting Products of Single Replacement
    finish lab
  • Learn to write Net Ionic Equations
  • Tonight
  • Practice predicting products and balancing
    equations for tomorrows quiz!
  • Read over the Student Learning Activities. Have
    you been working the suggested problems in your
    practice packet?

22
Predicting Products States of Matter for SINGLE
REPLACEMENT REACTIONS
  • Tips to remember
  • A BX ? CONSULT ACTIVITY SERIES TO BEGIN!
  • Metals () always come first in a compound!
  • Lone metals replace compound metals or hydrogen.
  • Lone nonmetals replace compound nonmetals.
  • Criss-cross to get subscripts.
  • Deal with number problems by balancing at the end.
  • Example
  • Potassium and silver nitrate
  • Reactant formulas
  • K AgNO3 ? TIP Label each element with
    its charge
  • Unbalanced Equation
  • K AgNO3 ? KNO3 Ag

Lets add states of matter.
23
Predicting Products States of MatterSINGLE
REPLACEMENT
  • Long Worksheet example
  • 52. Al HCl ?
  • Who will Al try to replace?
  • Is Al more active than H?
  • Criss-cross to write the products. Look for
    diatomic elements!
  • Unbalanced Equation Al HCl ? AlCl3 H2
  • Balanced Equation 2Al 6HCl ? 2AlCl3 3H2

Lets add states of matter.
24
DISCOVERING INDICATORS OF A CHEMICAL REACTION LAB
  • For each reaction
  • Predict the Products.
  • Write a balanced equation.
  • List as many observations as possible during the
    reaction.

25
Reactions in Aqueous Solution
  • MANY reactions occur in water
  • More than 70 of earth is covered by water
  • 66 of the human body is water
  • Many ionic compounds dissociate in water. They
    are described as (aq) in reactions.
  • Often aqueous reactions form solids called
    precipitates

26
Net Ionic Equations
  • Purpose Communicate the real action of the
    reaction and leave out the insignificant
    ions/elements
  • Begin with a balanced equation and states of
    matter.
  • Write a complete ionic equation, taking apart all
    aqueous compounds.
  • Remove spectator ions
  • Leaves a balanced net ionic equation
  • Example Potassium iodide and lead (II) nitrate
  • Discovering the Indicators of a Reaction
    Station 2

27
  • Why do I set up the lab with so many aqueous
    solutions?
  • Rate of Reaction
  • Temperature warmer faster reaction particles
    are moving faster
  • Concentration - of particles more particles
    faster reaction
  • State of Matter dissolved means greater surface
    area more surface area faster reaction
  • Surface Area - Filings, shot, powder, mossy,
    etc. greater surface area faster reaction
  • Catalyst DOES NOT REACT lowers the activation
    energy of the reaction

28
Predicting Products States of Matter
  • 52. 2Al(s) 6HCl(aq) ? 2AlCl3(aq) 3H2(g)
  • 56.ZnCl2 (NH4)2S ? 2NH4Cl ZnS

29
Predicting Products States of Matter
  • 56.ZnCl2 (aq) (NH4)2S(aq) ? 2NH4Cl(aq) ZnS(s)
  • 59. HgSO4 2NH4NO3 ? Hg(NO3)2 (NH4)2SO4

30
Predicting Products States of Matter
  • 59. HgSO4(aq) 2NH4NO3(aq) ? Hg(NO3)2(aq)
    (NH4)2SO4(aq)
  • 60. Fe CuSO4 ? FeSO4 Cu

31
Predicting Products States of Matter
  • 60. Fe (s) CuSO4 (aq) ? FeSO4 (aq) Cu (s)
  • 67. Br2 2NaI ? 2NaBr I2

32
Predicting Products States of Matter
  • 67. Br2 (l) 2NaI(aq) ? 2NaBr (aq) I2 (g)

33
Evidence of a Chemical Reaction
  • Formation of a gas
  • Bubbles
  • Smell
  • Formation of a solid (precipitate) from two
    aqueous solutions often solids are colorful
  • Snow globe effect
  • Paint look
  • Jello consistency
  • Change in temperature
  • Test tube feels colder to you (endothermic
    reaction)
  • Test tube feels warmer to you (exothermic
    reaction)
  • Produces light

34
Colored Pencil Corrections
  • Al(NO3)3 NaOH Al(OH)3 NaNO3
  • KClO3 KCl O2
  • H3PO4 Mg(OH)2 Mg3(PO4)2 H2O
  • NH4NO2 N2 H2O
  • BaCl2 Na2SO4 NaCl BaSO4
  • Fe2O3 CO Fe CO2
  • Mg(OH)2 (NH4)3PO4 Mg3(PO4)2 NH3 H2O
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