Transcript Mixed Prediction Practice

Mixed Prediction Practice
Frontload Net Ionic
• Objective:
▫ Today I will be able to:
 Predict the products of reactions for single replacement,
double replacement, decomposition, and synthesis reactions
• Evaluation/Assessment:
▫ Informal assessment: listening to group interactions as
students complete the practice sheets
▫ Formal Assessment: Analyze Student Responses as
they complete the practice worksheets
• Common Core Connection
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Build Strong Content Knowledge
Make sense of problem and persevere in solving them
Use appropriate tools strategically
Look for and express regularity in repeated reasoning
Lesson Sequence
• Evaluate: Warm – Up
• Explain: Review Single, Double, Synthesis, and
Decomposition Reactions
• Evaluate: Mixed Predicting Products Practice
• Elaborate: Practice Review
• Explain: Intro to Net Ionic Equations
• Evaluate: Exit Ticket
Warm-Up
• Predict the products, translate, balance, and
classify the following reactions:
1. Magnesium Bromide + Chlorine 
2. Sulfuric Acid + Sodium Hydroxide 
3. Sodium + Hydrogen 
Objective
– Today I will be able to:
• Predict the products of reactions for single
replacement, double replacement, decomposition, and
synthesis reactions
Homework
• STEM Fair TOMORROW Wednesday February
12
• Prepare for STEM Fair
– 4 Abstracts
– Business Casual
Lesson Sequence
• Warm – Up
• Review Single, Double, Synthesis, and
Decomposition Reactions
• Mixed Predicting Products Practice
• Practice Review
• Intro to Net Ionic Equations
• Exit Ticket
Predicting Products
How to for all types
Two types of single replacement
reactions
Metallic Free
•Free element is a metal
•Most common
•Example
•Mg + 2HCl  MgCl2 + H2
Non – Metallic Free
•Free element is a non-metal
•Example
•KI + Cl2  KCl + I2
Free elements will not always
switch places… so how can we
determine when a single
replacement reaction will
occur?
If the single replacement reaction is
metallic free:
• Use the activity series
of metals
• Anything higher on the
list as a free element
will replace anything
lower on the list from
a compound
Double Replacement Reactions
• Cations switch places with cations
ex: 3 CaCl2 + 2 AlN  2 AlCl3 + Ca3N2
In double replacement reactions:
– If a gas, water, or precipitate is not formed, the
reaction will not take place
– Determine and write states of products for double
replacement reactions
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Gas(g)
Precipitate (s)
Aqueous solution (aq)
Liquid (l)
Synthesis Reactions
•
Elements or simple compounds are
combined to form ONE product
Combine elements and criss-cross the
charges
Examples
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Cu(II) + S  CuS
4 Na + O2  2 Na2O
Decomposition Reactions
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If TWO elements (binary compound) are
present in the original compound, just break
it apart into two elements
2 HCl  H2 + Cl2
Decomposition Reactions
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If THREE elements (ternary compound) are
present, determine if one of them is a
HALOGEN
If one element is a halogen, then the
halogen and the metal stick together and
oxygen gas is produced
2 KClO3  2 KCl + 3 O2
Decomposition Reactions
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If there are no halogens present, then a
metallic oxide and a gas with 1 less oxygen
than the polyatomic ion is produced
CaCO3  CaO + CO2
What About Combustion
Reactions?
How can we predict their products?
Mixed Predicting Products
Practice
Working with your peers try to
complete the WS
Mixed Review
Any questions about the WS?
Writing Net Ionic Equations
Intro to the next unit
Net Ionic Equations
• In a double replacement reaction, not all ions
are involved in the reaction
– We call these “spectator ions”
• We write net ionic equations to determine
what actually reacted
Net Ionic Equations Example
• Molecular:
BaCl2(aq) + Na2SO4(aq)  2 NaCl(aq) + BaSO4(s)
• Complete Ionic:
Ba+2(aq) + 2 Cl-1(aq) + 2 Na+1(aq) + SO4-2(aq)  2 Na+1(aq) +
2 Cl-1(aq) + BaSO4(s)
• Net Ionic:
Ba+2(aq) + SO4-2(aq)  BaSO4(s)
Net Ionic Equations Practice
Lets look at an example.
Tomorrow during STEM Fair
you will complete a WS
Exit Ticket
• Predict the products of the reactions and
balance the equations
1) __ Na2CO3 
2) __ Mg + __ N2 