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.

Slides:

Advertisements

Similar presentations

More Reactions in Aqueous Solution: Acids and Bases

Advertisements

PH. Acids Anything that produces H 3 O+ ions if dissolved in water Taste sour Turns blue litmus paper red When acids dissolve in water, it donates a H+ion.

General Properties Indicators Neutralization Reactions

Intro to Acids & Bases General Properties Indicators Neutralization Reactions.

Ch. 8. pH Scale  Used to measure how acidic or basic a substance is  Ranges from 0-14.

King Distinguish between acids and bases and use indicators (including litmus paper, pH paper, and phenolphthalein) to determine their relative.

PH The wonders of water!. Acids Any compound that GIVES OFF H+ ions in solution Any compound that GIVES OFF H+ ions in solution Ex. HCl H+ and Cl- Ex.

Acids, Bases, and pH. Acids and Bases Acids produce H + ions which react with water to form hydronium (H 3 O + ) ions Bases produce OH - ions.

PH. pH—Scale to measure how acidic or basic a solution is 0-14 Pure water is 7 and neutral (not an acid or base) Acids—less than 7(lower number more acidic)

Chapter 19 Acids and Bases. Questions for Today 1. What are the physical and chemical property of Acids and Bases? 2. How do you classify solutions as.

Acid/Base Indicators Substance that changes color in the presence of an acid or a base – Red or Blue Litmus – Phenolphthalein (phth) – Bromothymol blue.

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

Acids and Bases. Properties of Acids: Properties of ACIDS: 1. tastes sour.

Chemistry Goal 10.  Substances can be classified as acid, base, or neutral based on their pH.  Acids and bases are solutions usually with water as.

Acids, Bases, and pH Chapter 9 Section 1.

Standard 5.a- Students know the observable properties of acids, bases, and salt solutions. 2/22/12.

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.

ACIDS AND BASES. ACIDS & BASES Acids are substances that produce hydrogen ion in solution. (H + (aq) ) Bases are substances that produce hydroxide ions.

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.

Aim: What are acids and bases?. Acids 1.Acids can be strong or weak electrolytes in aqueous solutions. 2.Acids (ex: HCl) react with certain metals to.

 An acid is a substance that produces a hydronium ion (H 3 O + ) when placed in water.  Examples of Acids:

Acidity and Alkalinity How do we tell an acid from a base and what is it good for?

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.

COMMON SENSE IS LIKE DEODORANT, THE PEOPLE WHO NEED IT THE MOST NEVER USE IT.

Acids and Bases Unit 12. Properties of an Acid  Sour taste  Turns litmus paper red (and responds uniquely to other indicators)  Reacts with:  Hydroxide.

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.

7 th grade science What is pH?. Some of our favorite foods make our tongue curl up because they are SOUR. Some of our favorite foods make our tongue curl.

Chapter 8 Acids, Bases, and pH.

Acids and Bases The pH scale What do vinegar, lemons, and orange juice have in common?

ACIDS and BASES Target: I will be able to define what makes something an acid or a base. I will be able to tell on a pH scale if something is an acid or.

What is pH?. pH is the measurement used to determine whether a substance is acidic or basic… Chemicals may be classed as acids or bases. Things that are.

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

Acids contain hydrogen are electrolytes turn blue litmus paper red neutralize bases taste sour solutions react with active metal (Fe/Zn) to produce H.

PSC 4012 Ionic Phenomena: A study of an environmental problem.

Acid-Base Notes. Acid- Compound that forms hydrogen ions (H + ) when dissolved in water Base – compounds that forms hydroxide ion (OH - ) when dissolved.

AB C D E F Do Now – Write down the given descriptions. Draw the picture that matches. 1. A pure substance – molecules only 2. Mixture – molecules and compounds.

ACIDS AND BASES PH.

Acids & Bases I. Intro to Acids & Bases  Definitions  Properties  Uses.

Why are solutions acidic or alkaline? How do we measure acids?

Acids and Bases Applied Chemistry. Acids  Definition: A substance that produces hydrogen ions (H + or H +1 ) in water.  General reaction in water: HA.

Acids and Bases. An acid is a substance that produces Hydrogen ions, H + (aq) in water (Arrhenius definition). The hydrogen ion (H + ) bonds with a water.

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. What are Acids and Bases..? What do we think about when we hear the words acids or bases? Sometimes we tend to think of a chemistry laboratory.

A CIDS & B ASES Science 10: Chemical Reactions. PROPERTIES OF ACIDS A chemical compound that produces hydrogen ions (H + ) when dissolved in water ex.HCl.

Acids and Bases. Acid: Any substance that gives a H + ion when dissolved in water. –Results in an excess of H 3 O + (hydronium) ions in a solution.

Acids and Bases. Objectives 1.I.D. the physical and chemical properties of acids and bases 2.Classify a solution as acidic, basic or neutral. 3.Explain.

Physical Science Chapter 9.2.  Create a sour taste in foods (lemons)  React with metals to produce hydrogen gas (H 2 )  Change color of blue litmus.

Properties of Acids and Bases Acids Bases *Taste sour*Taste Bitter *Turns blue litmus paper red*Turns red litmus paper blue *Reacts with metals*Produces.

Acids and Bases. Arrhenius Definition of Acids and Bases Arrhenius defines acids and bases as: ACID – a substance that dissociates in water to produce.

Acids, Bases & pH. Acids Has positive hydrogen ions (H+) Has positive hydrogen ions (H+) Sour Taste Sour Taste Reacts with Metals and Carbonates Reacts.

Acids and Bases. Warm up Please do Day 4 questions on your warm up sheet - The homework is due Today -Science fair students I need to give you your order.

Physical Science Chapter 23 ACIDS AND BASES.  Acid: A substance that produces hydrogen ions in a water solution.  The hydrogen ion then interacts with.

19-2 Describing Acids and Bases

P in Prentice Hall Biology, Miller and Levine.

Acids: Bases: Properties of Acids : A CIDS Taste sour. Cause blue litmus paper to turn pink. Form H 2 (g) in front of active metals. Form CO 2 (g) in.

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.

TEXAS EDUCATION AGENCY POINT OF VIEW

8.3 Properties of Acids and Bases

ACIDS AND BASES.

Unit 12 Acids & Bases

2B.3 Notes Acids & Bases 10/29/18.

Notes: Acids and Bases.

Acids and Bases.

Acids and Bases When water dissociates,

Physical Science Chapter 23

Presentation transcript:

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 to taste sour Give off/ contribute H + ions into a solution Give off/ contribute H + ions into a solution Ex.) HCl  H + (aq) + Cl - (aq) Ex.) HCl  H + (aq) + Cl - (aq) (aq) stands for aqueous, which means it is a solution in which the solvent is water (dissolved in water) (aq) stands for aqueous, which means it is a solution in which the solvent is water (dissolved in water)

Acids… There is a very strong acid in our stomach, HCl. This is what sometimes cause heartburn. There is a very strong acid in our stomach, HCl. This is what sometimes cause heartburn.

Bases Bases pH of > pH of > Do not react with metals Do not react with metals React with acids React with acids Tend to taste bitter Tend to taste bitter Give off/ contribute hydroxide ions ( OH - )to a solution Give off/ contribute hydroxide ions ( OH - )to a solution ex.) NaOH  Na + (aq) + OH - (aq) ex.) NaOH  Na + (aq) + OH - (aq)

Neutral Neutralization pH of 7 pH of 7 Neither acidic nor basic Neither acidic nor basic Pure water Pure water We can neutralize an acid with a base, or neutralize a base with an acid. We can neutralize an acid with a base, or neutralize a base with an acid. Ex.) There are bases secreted in our intestines that neutralize the acid from our stomach. Ex.) There are bases secreted in our intestines that neutralize the acid from our stomach.

The pH Scale A scale developed in order to determine how acidic or basic a substance is. A scale developed in order to determine how acidic or basic a substance is. Values on the scale range from Values on the scale range from 0-14.

Indicator A substance that changes color in the presence of an acid or base. A substance that changes color in the presence of an acid or base. Ex. Cabbage Juice, litmus paper Ex. Cabbage Juice, litmus paper

The pH Scale…