Chapter 2.

Slides:

Advertisements

Similar presentations

NOTES 10 – Acids, Bases, & pH.

Advertisements

Acids and Bases. Acids Acids are substances that release hydrogen ions, H +, in solution Acids are substances that release hydrogen ions, H +, in solution.

pH pH scale- measure of H+ ions (acidity); “power of hydrogen” #10.

Solutions and pH.

Chapter 9 Acids & Bases.

Acids and Bases. Think back to a time when you have eaten something very sour… Think back to a time when you have eaten something very bitter… What were.

Question 7  What are some characteristics of acids and why are they important in living systems? - Characteristics: - Sour taste - Can dissolve many.

Solutions Acids and Bases. Solutions A solution is a mixture in which one or more substances are uniformly distributed in another substance. (Liquids,

Unit: Chemical Interactions Chapter 8: Solutions When substances dissolve to form solutions, the properties of the mixture change. 8.1: A solution is a.

Acids, Bases, and the pH scale. Acids Acids pH of 0 - < 7 pH of 0 - < 7 React with metals and Bases React with metals and Bases Tend to taste sour Tend.

The chemical of life. Acids Sour taste, leaves burning sensation Increase hydrogen ions (H+) in solution.

Acids, Bases, and pH Unit 7: Acids and Bases. What are Acids? Definition: Ionic compounds that produce hydrogen ions (H+) when dissolved in water What.

Inorganic chemistry Assistance Lecturer Amjad Ahmed Jumaa  Arrhenius theory of acids and bases.  Arrhenius acids.  Arrhenius bases.

Acids, Bases, Salts and pH Physical Science. Acids Acids are chemicals in which the positive ion is a hydrogen atom. n for example; HCl or H 2 SO 4 n.

Take out a scrap piece of paper… List 2 acids and 2 bases.

ACIDS, BASES, & SALTS Chapter 17.

PH & Acid Rain. What is an Acid? An acid is a substance which, when dissolved in water, releases protons. ([H + ] ions) The amount of protons ([H +

Take out a scrap piece of paper… List 2 acids and 2 bases.

Acids and Bases. A. Definitions 1. Acid releases hydrogen ions (H + ) 2. Bases release hydroxide ions (OH - ) 3. pH scale – measures how acidic or basic.

Acids / Bases Foster ESS Study this for the Quiz.

Acids/Bases and the pH Scale

Acids and Bases PS-3.8 Classify various solutions as acids or bases according to their physical properties, chemical properties (including neutralization.

Acids and Bases.

PH “Power of Hydrogen”. Water and pH Acids: When poured into water, it gives up H (hydrogen) to the water. Bases: When a base is poured into water, it.

2.3 Solutions. Objectives 9. Define solution, solute, solvent, and concentration 10. Explain the dissociation of water 11. Contrast properties of acids.

Acids and Bases in Solution. Acids  An acid is any substance that produces hydrogen ions (H+) in water.  Hydrogen ions cause the properties of acids.

ACIDS AND BASES PH.

ACIDS, BASES, & pH MAIN IDEAS 1.ACIDS 2.BASES 3.pH SCALE 4.BUFFERS Objective SWBAT explain the properties of acids and bases utilizing indicators with.

Acids, Bases, and Salts Get to know them!. Facts about Acids and Bases An acid is a substance that produces Hydrogen Ions ( H + ). A bases is a substance.

The pH Scale The measure of the difference between acids, bases and salts.

Homeostasis: The Effect of pH on Cells. Organisms need certain conditions to live Correct temperature Correct hydration (water) Correct amount of light.

Acids, Bases, and Salts. pH pH – measure of the concentration of H + ions in a solution or how acidic or basic it is. Scale ranges from 0-14 Strong acids.

Acids, Bases and pH The Power of Hydrogen.

Acids, Bases, and pH A water molecule can react to form ions. Water   Hydrogen ion + Hydroxide ion.

Acids and Bases. Have you ever wondered, “Why do foods taste sour or bitter?”

Solutions and pH Chapter 2 sec. 2.2 pg Solutions Mixtures – a combination of substances that retain their original properties Ex. trail mix, air,

19-2 Describing Acids and Bases

P in Prentice Hall Biology, Miller and Levine.

Unit 11 Acids and Bases. ACIDS Any substance that generates a hydrogen ion (H + ) when dissolved in water The pH of an acid ranges from 0-6; 0 is the.

Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Acids and Their Properties An acid is any compound that increases.

UNIQUE PROPERTIES OF WATER: Water can break apart to form hydrogen ions (H+) and hydroxide ions (OH-). Water can break apart to form hydrogen ions (H+)

PH scale Notes HeadingsVocabularyImportant Info. Acids, Bases and pH Scale The pH scale measures the concentration of H+ (hydrogen) ions or how acidic/basic.

ACIDS & BASES An Overview. Acids A compound that produces hydrogen ions (H+) when dissolved in water. Properties include sour taste, reactivity with metals,

Acids and Bases.

The Chemistry of Acids and Bases

Acids, Bases, and pH.

Acids and Bases.

TEXAS EDUCATION AGENCY POINT OF VIEW

Introduction to Acids and Bases

Lesson Overview 2.2 Properties of Water.

Activity #14: pH.

Describing Acids and Bases

8.3 Properties of Acids and Bases

Which is more dangerous?

Introduction to Acids and Bases.

Wednesday, October 22nd , 2014 Objective: to identify acids and bases by ph level. Warmup: 1.) When sugars are broken down to produce usable energy.

Glencoe: Chapter 24 Sections 3 and 4 Pages

Acids and Bases Otherwise known as pH!.

Acids, Bases, and pH A water molecule can react to form ions.

Acids, Bases, Salts and pH

PH scale A. A measurement system to indicate the concentration of H+ (hydrogen ions) 1. The pH scale ranges from Water is made up of H+ and OH-

DO NOW: Have you ever had heartburn. Describe what it feels like

Chemistry Brief Intro. Module 2.

Warm Up Take out your notes and practice problems on Types of reactions. Review and get ready for a quiz.

Introduction to Acids and Bases

Unit 7: Chemical Reactions

Acids, Bases, & Chemical Reactions

Acids and Bases When water dissociates,

Physical Science Chapter 23

Presentation transcript:

Chapter 2

Everyday Acids

Properties of Acids Dissolves (Stomach acid) Erodes (Acid Rain) Burns (Battery acid) Tastes sour

Acids An acid is a compound that releases Hydrogen ions (H+) into solution. HCL  H+ + CL- Hydrochloric acid  Hydrogen Ion + Chloride Ion A strong acid has a lot of H+ ions.

Everyday Bases

Properties of Bases Tastes Bitter Burns Feels Soapy or slippery

Bases A base is a compound that release hydroxide (OH-) ions into solution. NaOH  Na+ + OH- Sodium hydroxide  Sodium Ion + Hydroxide ion. A strong base has a lot of OH- ions.

Why are Acids and Bases important in Biology? Certain Biological reactions can only occur in acids and bases. Stomach acid dissolves food Some digestion in the small intestine requires a base. Acids and bases can also have an environmental impact. Dumping of chemicals into rivers, lakes and oceans. Acid rain.

The pH Scale Acid strength is measured by the concentration of H+ ions. This concentration is called the pH.

Enzymes - A Type of Protein Enzymes function at an optimal pH. Human enzymes work best at a pH between 6 and 8. Changing the pH can alter the rate of reaction for an enzyme.

Neutralization Neutralization reaction - When a strong acid and a strong base are mixed together. H+ + OH-  H2O A neutral substance has equal amounts of H+ and OH- when dissolved. A neutral substance has a Ph of 7. Distilled water.

Why are neutralization reactions important in Biology? Human Blood and cells must maintain a pH of around 7. Neutralization reactions help maintain a constant pH. Food going from the stomach to the small intestine has a very high pH. The acid is neutralized before entering the small intestine.

Clicker Question The pH scale Measures the strength of an acid Ranges from 0 to 14 Measures the concentration of H+ ions. All of the above are correct None of the above are correct

Clicker Question A strong acid Has a high concentration of H+ ions. Has a low concentration of H+ ions. Has a high concentration of OH- ions. Has a low concentration of OH- ions.

Clicker Question A strong base Has a high concentration of H+ ions. Has a low concentration of H+ ions. Has a high concentration of OH- ions. Has a low concentration of OH- ions.

Clicker Question A substance with a pH of 3 is considered An Acid A Base Neutral

Clicker Question A substance with a pH of 7 is considered An Acid A Base Neutral

Clicker Question A substance with a pH of 10 is considered An Acid A Base Neutral

Clicker Question The arrow is pointing to an area on the pH scale where A. B. C.

Clicker Question Which substance is the strongest base? Hydrochloric acid Sodium hydroxide Rain water Sea water Pure water

Clicker Question Which substance is the strongest acid? Hydrochloric acid Sodium hydroxide Rain water Sea water Pure water

Clicker Question Which substance has the highest H+ ion concentration? Sulfuric acid Tomatoes Rain water Sea Water Ammonium chloride

Clicker Question Which substance has the highest OH- ion concentration? Sulfuric acid Tomatoes Rain water Sea Water Ammonium chloride