Chapter 6 complete - Lecture 15: Chemical Reactions Goals:...

Info iconThis preview shows pages 1–13. Sign up to view the full content.

View Full Document Right Arrow Icon
Lecture 15: Chemical Reactions Goals: Write balanced chemical equation from the formula of the reactants and products for a chemical reaction. Identify a chemical reaction as a combination, decomposition, single replacement or double replacement reaction. Define the terms oxidation and reduction. Outline (Timberlake 6.1-6.3): Chemical Reactions (6.1) Types of Reactions (6.2) Oxidation-Reduction Reactions (6.3) Problems for Extra Practice: 6.1, 6.3, 6.5, 6.9, 6.11, 6.13, 6.15, 6.17
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Chemical Change In a chemical change , • reacting substances form new substances with different compositions and properties • a chemical reaction takes place
Background image of page 2
Chemical Reactions In a chemical reaction , • a chemical change produces one or more new substances • there is a change in the composition of one or more substances
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Learning Check Identify the visible evidence of a chemical reaction in each of the following: 1) Methane gas in an outdoor heater burns with a blue flame. 2) Bleach removes stains from a shirt. 3) Bubbles of CO 2 are released when baking soda is mixed with vinegar. Heat and a flame Color change (color removed) Formation of gas (bubbles)
Background image of page 4
Chemical Equations A chemical equation • gives the chemical formulas of the reactants on the left of the arrow and the products on the right Reactants Products
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Symbols Used in Equations Symbols used in chemical equations show • the states of the reactants • the states of the products • the reaction conditions
Background image of page 6
Chemical Equations are Balanced In a balanced chemical reaction , atoms are not created or destroyed the number of atoms in the reactants is equal to the number of atoms in the products In a balanced chemical equation , there must be the same number of each type of atom on the reactant side and on the product side numbers called coefficients are used in front of one or more formulas. H 2 + O 2 H 2 O Not balanced 2 H 2 + O 2 2H 2 O Balanced
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Equation for A Chemical Reaction
Background image of page 8
Learning Check State the number of atoms of each element on the reactant side and the product side for each of the following balanced equations: A. P 4 ( s ) + 6Br 2 ( l ) 4PBr 3 ( g ) B. 2Al( s ) + Fe 2 O 3 ( s ) 2Fe( s ) + Al 2 O 3 ( s ) 4P 12Br 4P 12Br 2Al 2Fe 3O 2Fe 2Al 3O
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Learning Check Determine if each equation is balanced or not. A. Na( s ) + N 2 ( g ) Na 3 N( s ) B. C 2 H 4 ( g ) + H 2 O( l ) C 2 H 5 OH( l ) Not balanced Balanced
Background image of page 10
Guide to Balancing Equations
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
– Step 1: Write the equation with the correct formulas. – Step 2: Determine if the equation is balanced. – Step 3: Balance with coefficients in front of formulas. – Step 4: Check that atoms of each element are equal in reactants and products. N
Background image of page 12
Image of page 13
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 01/18/2012 for the course CHEM 120A taught by Professor Leahmiller during the Fall '11 term at University of Washington.

Page1 / 127

Chapter 6 complete - Lecture 15: Chemical Reactions Goals:...

This preview shows document pages 1 - 13. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online