1/21/2013 NO SCHOOL - MLK DAY. 1/22/2013 Standards: 3 (Stoichiometry) Objectives: ● be able to: mol mass (compounds) DO NOW: 1. Convert 4.100 mol KMnO.

Slides:

Advertisements

Similar presentations

It’s a beauty mark… It’s a small furry garden pest… No, wait… its how we count ATOMS!

Advertisements

Introduction to the Mole and Molar Mass

Honors Chemistry B Agenda. 11/5 Happy New Year! attendance Calendar Materials needed from last semester – Periodic table – Ions lists – Naming rules:

3/19/2012 Standards: 4 (Properties of Gases) Objectives: ● Work HW problems so students can perform HW using PV = nRT ● Students will be able to do on-line.

Yes, you will need a calculator for this chapter!

If your given is in moles: Determine the molar ratio to change from moles of your original substance to moles of the desired substance If you want your.

Physical Science Ms. Cilli December ½, While we wait, review conversion factors.

Chapter 7 Chemical Quantities

Molar Mass Sections 4-4 to 4-6. Carbon Atomic # is 6 Atomic mass is u Molar mass (mass per mole) is g/mole.

Math with Chemical Formulas

Honors Chemistry Snarrenberg

2/13/2012 Standards: 3 Objectives: Lincoln’s Birthday, no school DO NOW: 1. HOMEWORK: 1. ====================================================================

Today: Quiz Thursday / Friday May 16/17 HW – Read pages Worksheet – Concentrations of solutions Worksheet - Molarity Problems 1.

4/2/2012 Standards: 6 (Solutions) Objectives: ● Mr. Wigger Absent - problems to practice material from Ch 15.1 & 15.2 D O NOW: 1. Ch 15 Assess, p

1/7/13 Stds: 3 (Conservation of Mass & Stoichiometry) OBJECTIVES: Mem Ions 4 (coming Fri) - what will be on it (show where). New program to encourage doing.

3/12/2012 Standards: 4 (Gases & Their Properties) Objectives: ● Complete Dalton's Law Lab ● Introduce PV = nRT (R = constant which = ) DO NOW: 1.

2/20/2012 Standards: z Objectives: ● No School – President’s Day DO NOW: 1. HOMEWORK: 1. ====================================================== STAMPS:

WHAT IS A MOLE?.

11/12/12 Veteran's Day NO SCHOOL. 11/13/2012 Standards: 2 Objectives: a. Be able to figure relative lattice energies b. Be able to put + & - ions together.

Calculations with Limiting Reagents Limiting reactant – reactant (reagent) that is used up first and thus limits how much product can be made The other.

2/4/2013 Standards: 3 (Stoichiometry) Objectives: ● Students will understand all coefficient mol ratios in balanced eqns. DO NOW: 1. Start your homework.

12/19/2010 Standards: Many Objectives: a. Check for understanding with Test 2 - Ch 2,3,4,5,6,8, & 9 DO NOW: 1. Clear floor and tables: You will want calculator,

Performing Stoichiometry Calculations Notes and Practice for ALMOST every possible calculation.

% Composition & Empirical Formula. V.4 PERCENTAGE COMPOSITION Percentage composition is the percentage (by mass) of the species in a chemical formula.

5/21/2012 Standards: MISC Objectives: ● Students will answer review questions and perform better on CST for Chem DO NOW: 1. Get a Zumdahl textbook for.

Mole Jeopardy Moles and Grams Avagadro!Percent Composition Empirical Formula Molecular Formula

4/29/2013 and 4/30/2013 Standards: 7 (Chemical Thermodynamics) Objectives: ● Students will be able to calculate 2 problem types: a. specific heat problems.

Chapter 8 Hydrates.

12/12/2011 Standards: 2 (Chemical Bonds) Objectives: Banking Day Std 2 (Chem Bonds) a. Be able to name ionic and covalently bonded molecules b. Be able.

Section 7.3 – Using Chemical Formulas

1/30/2012 Standards: 3 My Website - Objectives: 1. be able to recognize 6.02 x = mole = Avogadro's Number 2. be able to.

Stoichiometry Study of mass and chemical amounts. 1. Compound stoichiometry 2. Reaction stoichiometry.

The Mole. The Mole The Mole Memorize this number: 1 mol = 6.02 x 1023 of something A mole is defined as the number of particles in exactly 12g of Carbon-12.

WHAT IS A MOLE?. Moles: Measuring Matter A UNIT OF MEASURE!!! 1 mole = 6.02 x representative particles – atoms, molecules, formula units, ions –

2/11/13 NO School Lincoln's Birthday. 2/12/2013 Standards: 3 (Stoichiometry) Objectives: ● Students will be able to perform well on Quiz 3.2 (Ch 11 and.

Unit: Chemical Quantities Determining the Empirical Formula from Percent Composition Day 6 - Notes.

March 21, 2012 AGENDA: 1 – Bell Ringer & Part. Log 2 – CN: Multiple Step Mass and Mole Stoichiometry 3 – Work Time 4 – Quiz Grades Today’s Goal: Students.

5/20/2013 Standards: 10 (Organic Chemistry) Objectives: ● Students will COMPLETE DATA GATHERING for Acid/Base Lab - ● Students will answer all questions.

The Mole, part II Glencoe, Chapter 11 Sections 11.3 & 11.4.

Mole / Gram Conversion Steps (Dimensional Analysis) 1.Determine the starting point and final destination in the problem. 2.Using the information gathered.

Section 12.2: Using Moles (part 3). Mass Percent Steps: 1) Calculate mass of each element 2) Calculate total mass 3) Divide mass of element/ mass of compound.

Stoichiometry is… Greek for “measuring elements” Defined as: calculations of the quantities in chemical reactions, based on a balanced equation. There.

4/15/2013 (periods 1,3, & 5) 4/16/2013 (periods 2 & 6) Standards: 5 (Acids and Bases) Objectives: ● Complete CST ● Students will be able to simplify.

Chapter 8 Mole Conversions Part : Molecular Mass/Weight Formula Mass/Weight The formula of an Acetylsalicylic Acid (Aspirin) molecule is C 9 H 8.

Unit: Chemical Quantities

It’s time to learn about.... Stoichiometry: Conversions At the conclusion of our time together, you should be able to: 1. Convert a mole of a chemical.

Entry Task: Feb 22 nd Friday Entry Task Question: Write the question down Calculate the % H 2 O in the compound NiCl 2 6 H 2 O. Provide answer TURN IN.

January 19, 2016 Objectives: Students will set up for Semester 2 Essential Question(s) - None Lesson: - Setup for Semester 2 - Review of Short Answer Final.

Agenda 2/18/ A Day Slip Quiz - timed The Mole is a number – and so much more! Study Guide – self-check and grade Homework worksheets Equations and.

Solution Chemistry Notes Solution Chemistry Notes.

Pre-AP 2/8 : 1. Please place your project on a back lab station (STAPLE THE RUBRIC ON FRONT, then the calculations, then the information sheet) 2. Also.

Notebooks collected for: Periods 3 Tu 1/29 Periods 5 & 6 Wed 1/30 1/28/2013 Standards: 3 (Stoichiometry) Objectives: ● Prep for and give instruction on.

Stoichiometry Molar mass, Percent composition, Moles, Conversions, Empirical formulas, Molecular formulas.

Chapter 7 Chemical Quantities

Stoichiometry Molar mass, Percent composition, Moles, Conversions, Empirical formulas, Molecular formulas.

Chapter 5 Chemical Quantities and Reactions

STOICHIOMETRY Chapter 9

Stoichiometry Molar mass, Percent composition, Moles, Conversions, Empirical formulas, Molecular formulas.

Hydrates Stoichiometry February 6, 2018

Chapter 7 Chemical Quantities

Stoichiometry and molarity practice

Section 3.2 Stoichiometry and Compound Formulas

Grams to Moles of molecules

Quick ‘cheat sheet’ If given A to find B

Section 3: Mole Conversions

Stoichiometry Molar mass, Percent composition, Moles, Conversions, Empirical formulas, Molecular formulas.

STOICHIOMETRY Chapter 9

1/9/18 Opener How many moles are there if you have 3.08 x 1024 particles of Ag? Please get out your weekend homework assignment, periodic table, & a calculator.

Today: Quiz next time we meet! HW – Read pages

Aim: How do you express concentration of a solution

Presentation transcript:

1/21/2013 NO SCHOOL - MLK DAY

1/22/2013 Standards: 3 (Stoichiometry) Objectives: ● be able to: mol mass (compounds) DO NOW: 1. Convert mol KMnO 4 to grams of KMnO 4 (check ans = g). If correct, start homework. HOMEWORK: 1. Ch 11.3, p , and 30 (a-e). Show all calculations. All problems require 2 fractions, including given/1. Check you work, answer will be on today's HW page. (5 pts) Std 3. ========================================================== BASKET: Journal 1/18 (Molar Mass Lab) 1. Ch 11.3 p , and p (5 pts) Std 3

When done, turn over ans sheet and quiz

DO NOW Convert mol KMnO 4 to grams of KMnO 4

1/23/2013 Standards: 3 (Stoichiometry) Objectives: ● be able to: mass mol particles (compounds) DO NOW: 1. Convert 85.0 g KMnO 4 to particles of KMnO 4. Requires 3 fractions including the given/1. HOMEWORK: 1. Ch 11.3, p Show all calculations and label each section of each problem. (5 pts) Std 3 ========================================================== BASKET: 1. Ch 11.3, p Show all calculations. All problems require 3 fractions, including given/1. (5 pts) Std 3

ANNOUNCEMENT L ook at your on-line grade and your Stamp Sheet and compare to my on-line stamp sheet. If you have anything missing, you have until Friday to make-up or receive a note home to parents.

DO NOW 1. Convert 85.0 g KMnO 4 to particles of KMnO 4

p. 326 #31 Particles in this problem are: Ag 1+ IN SOLUTION Ag Cr O O O O CrO 4 2- ION Ag 2 CrO 4 THE SOLID ZERO CHARGE look below Cr O O O O Demo - AgNO 3 mix with NaCl

p. 326 #31 first convert 25.8 g Ag 2 CrO 4 to particles (molecules Ag 2 CrO 4 ). You cannot answer a, b, and c until you have done this conversion. Solution: a. convert particles of Ag 2 CrO 4 to particles of Ag 1+ ions. b. convert particles of Ag 2 CrO 4 to particles of CrO 4 2- ions. c. Finding the grams of one Ag 2 CrO 4 molecule means the grams/formula unit of Ag 2 CrO 4. That is the molar mass of Ag 2 CrO 4 divided by the Avo number. ratio of Ag 2 CrO 4 : Ag 1+ ions is: 2 Ag 1+ : 1 Ag 2 CrO 4 Use this ratio to convert Ag 2 CrO 4 particles (answer to first part of solution) 25.8 g Ag 2 CrO 4 1 mol Ag 2 CrO x Ag 2 CrO x x g Ag 2 CrO 4 1 mol Ag 2 CrO 4 = x = 4.68 x Ag 2 CrO 4 ratio of Ag 2 CrO 4 : CrO 4 2- ions is: 1 CrO 4 2- : 1 Ag 2 CrO 4 Use this ratio to convert Ag 2 CrO 4 molecules (answer to first part of solution) to CrO 4 2- ions AgAg AgAg CrCr O O O O 332 g Ag 2 CrO 4 1 mol Ag 2 CrO 4 1 mol Ag 2 CrO x Ag 2 CrO 4 x 5.51 x g/formula unit Ag 2 CrO 4 = 4.68 x Ag 2 CrO 4 2 Ag Ag 2 CrO 4 x = 9.36 Ag 1+ ions 4.68 x Ag 2 CrO 4 1 CrO Ag 2 CrO 4 x = 4.68 X CrO 4 2- ions

1/24/2013 Standards: 3 (Stoichiometry) Objectives: ● be able to calculate: mass mol particles (compounds) DO NOW: 1. Complete Worksheet on mass mol particles HOMEWORK: 1. App A, p , Ch (5 pts) Std 3 ========================================================== BASKET (Turned In): 1. Ch 11.3, p Show all calculations and label each section of each problem. (5 pts) Std 3 ANNOUNCEMENTS P ractice quiz (10 pts) on Friday 1/25 and Periods 1 & 2 notebooks to be collected Friday 1/25.

Answers to tonight's HW so you can check your answers. Ch 11.3, App A, p

Notebooks collected for Periods 1 & 2 Fri 1/25 Periods 3 Mon 1/28 Periods 5 & 6 Tu 1/29 1/25/2013 Standards: 3 (Stoichiometry) Objectives: ● Review: mass mol particles (compounds) ● Mini-Quiz Ch (10 pts) DO NOW: 1. Turn in HW and take a blank piece of paper. HOMEWORK: 1. App A, p , Ch (5 pts) Std 3 (Yes, DO IT AGAIN) If you do not have a text book, you will find the problems on the next page of this Whiteboard file. ========================================================== BASKET (Turned In): Journal 1/23 (2 days ago) 1. App A, p , Ch (5 pts) Std 3 Students were ill prepared for this quiz.

App A, p , Ch (5 pts) Std 3

FI ND GIV EN 2 students - one move arrows, one dictates set-up Given Find

Formula of a Hydrate moles of H 2 O moles of dry salt

HYDRATES Chemicals that adsorb water. Dried out hydrates will get "wet" if left out in an unsealed container. They will even get "wet" in a "closed" container if left long enough.

Example of hydrate Calculations BaCl 2 2 H 2 O Getting the moles of H 2 O Mass of evaporating dish = 15.9 g Mass of dish and hydrated salt = Mass of hydrated salt g Mass of dry salt 368