1 Acids and Bases Properties of Matter AM CARRIER.

Slides:

Advertisements

Similar presentations

ACIDS AND BASES

Advertisements

LecturePLUS Timberlake1 8.2 & 8.3 – Acids, Bases & the pH Scale.

Introduction to Acids, Bases

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.

Acids and Bases. Arrhenius Acids and Bases Acids produce H + in aqueous solutions water HCl H + (aq) + Cl - (aq) Bases produce OH - in aqueous solutions.

 What is a solution?  What are the differences between unsaturated, saturated, and supersaturated solutions?  What are some of the general properties.

ACIDS and BASES. Why ‘acids and bases’? Scientists like to classify things and donating them as acids or bases is one way to do that. If a solution is.

Acids and Bases (p , ). Acids Taste sour.

Chapter 14: Acids and Bases and pH

Acids & Bases Acids Arrhenius Model Produce hydrogen ions aqueous solution. HCl  H + (aq) + Cl - (aq) Acids you SHOULD know: Acids you SHOULD know:

Matter and Energy.  Matter – anything that has mass and occupies space  Chemistry – the study of the properties of matter and how matter changes  Substance.

Chapter 3: Acids, Bases, & Solutions solution- a mixture containing a solvent and at least 1 solute and has the same properties throughout. solvent- the.

Acids and Bases Thursday, March 3.

LEQ: What techniques in the lab setting will be used to identify acids and bases?

Govt. of Tamilnadu Department of School Education Bridge Course Class VII -Science.

1 Chapter 9 Acids and Bases Acids and Bases. 2 Acids and Bases – What they do in water Acids produce H + in aqueous solutions water HCl H + (aq) + Cl.

1 Some Properties of Acids þ Produce H + (as H 3 O + ) ions in water (the hydronium ion is a hydrogen ion attached to a water molecule) þ Taste sour þ.

1 Acids and Bases. 2 In the expression for [H 3 O + ] / [H+] 1 x 10 -exponent the exponent = pH [H 3 O + ] = 1 x 10 -pH M pH.

1 Acids and Bases Properties of Matter. Litmus paper - Litmus paper is a pH indicator used to test materials for acidity. Blue litmus turns red in acidic.

Acids and Bases.

Acids are electrolytes that: þ Produce H + (as H 3 O + ) ions in water – always listed first in the formula þ Turn blue litmus red þ Taste sour þ Corrode.

LecturePLUS Timberlake1 Chapter 25 Acids and Bases Acids and Bases.

Acids & Bases They are everywhere.. In your food In your house EVEN IN YOU!!!!!

ACIDS AND BASES. Chapter 7 Reactions that form water: Acids and Bases Chapter 7 Reactions that form water: Acids and Bases  To learn the key characteristics.

Acid and Base Chemistry. Some Properties of Acids þ Produce H + (as H 3 O + ) ions in water (the hydronium ion is a hydrogen ion attached to a water molecule)

LecturePLUS Timberlake1 Chapter 9 Acids and Bases Acids and Bases.

1 Unit 11 Chapter 20 Acids and Bases Acids and Bases.

Acids and Bases SC Physical Science Standard PS-3.8 Classify various solutions as acids or bases according to their physical properties, chemical properties.

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.

Topic: All about Acids and Bases Do Now:. Acids IDENTIFY an Acid Covalent Formulas that start with H (exception: H 2 O 2 and H 2 O) or end with COOH.

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

1 IN THE NAME OF ALLAH THE MOST GRACIOUS, THE MOST MERCIFUL CHEM 122. LEVEL-2 LECTURE# 2 CHAPTER 9 – ACIDS & BASES Chemistry by Timberlake p.266 RCDPR.

1. Acidus – meaning sour or tart 2. Feels like water 3. Litmus Paper – red 4. Conducts electricity 5. Reactive with metals 6. React with bases to form.

Acids and Bases.

Acid Base Chemistry. The Electrolyte family Acid Base Salt (Water) Electrolytes conduct electricity.

Acids and Bases. Acids & Bases ● There are 3 common definitions of acids and bases. – Arrhenius definition – acids increase H+ concentration, bases increase.

Properties.  They taste sour (don’t try this at home).  They can conduct electricity.  Can be strong or weak electrolytes in aqueous solution  React.

Acids and Bases Acids and Bases. Acids Have a sour taste. Vinegar is a solution of acetic acid. Citrus fruits contain citric acid. React with certain.

Acids and Bases. Acid: A compound that when written, generally has hydrogen written first Produces hydronium ions (H 3 O + ) when dissolved in water.

Acid and Base Ch 15 and 16. acids 1. tastes sour. 2. conducts an electric current. 3. Causes certain dyes ( indicators) to change color. 4. Liberates.

EQ: How can we use acids and bases in our everyday lives?

Acids and Bases and pH How can we use acids and bases in our everyday lives?

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

Acids and Bases Chapter 2.3 page 56.

ACIDS AND BASES Properties of Acids  Acids are proton (hydrogen ion, H + ) donors  Acids have a pH lower than 7  Acids taste sour.

Acids, Bases, and pH Ch. 23 Chapter 6.3. What are Acids?  Donate hydrogen ions, H+  Forms H 3 O+( hydronium ion) when dissolved in water  Tastes sour-ex.

Acids & Bases Chapter 9. Arrhenius Acid DEFINITION Any substance that releases hydrogen ions in water. Any substance that releases hydrogen ions in water.EQUATION:

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.

Chapter 20 pH. Water forms ions H 2 O ----> H + + OH - Water splits apart into hydrogen ions (H+) and hydroxide ions (OH-). This process is called self-ionization.

Acids & Bases. Properties  electrolytes  turn litmus red  sour taste  react with metals to form H 2 gas  slippery feel  turn litmus blue  bitter.

LecturePLUS Timberlake1 Chapter 9 Acids and Bases Acids and Bases.

Chapter 7, Section 3 & 4 Describing Acids and Bases Acids & Bases in Solution.

Properties of Acids and Bases Chemistry Spring 2014.

Objectives l PSc –Summarize the characteristics and interactions of acids and bases.

Objective: To differentiate between acids and bases Do Now: List some everyday acids and bases.

LecturePLUS Timberlake1 Acids and Bases. LecturePLUS Timberlake2 Acids and Bases Acids produce H + in aqueous solutions water HCl H + (aq) + Cl - (aq)

Acids and Bases.

Acids and Bases.

Chapter 24:Chemical Compounds

Acids and Bases.

Unit 5: (2) Acids and Bases

Acids and Bases.

Describing Acids and Bases

Describing Acids and Bases

Acids and Bases.

Acids & Bases Introduction

Presentation transcript:

1 Acids and Bases Properties of Matter AM CARRIER

2 Acids þ Produce H + ions in water þ Turns litmus paper RED þ Taste sour, Feel squeeky þ Corrode materials þ Conduct Electricity þ React with bases to form salts and water þ Measure 0-6 on the pH scale

3 Some Common Acids HCl hydrochloric acid (stomach) H 2 CO 3 carbonic acid (acid rain) H 3 PO 4 phosphoric acid (Coca Cola) H 2 SO 4 sulfuric acid (Batteries) CH 3 COOH acetic acid (Pickles)

4 Bases Produce OH - ions in water Turns Litmus Paper BLUE Taste bitter, chalky Feel soapy, slippery Also conduct electricity React with acids to form salts and water Measure 8-14 on the pH scale

5 Some Common Bases NaOHsodium hydroxide (DRANO) KOH potassium hydroxide (Tie Dye) Na 2 CO 3 sodium carbonate (baking soda) Mg(OH) 2 magnesium hydroxide (MOM) Al(OH) 3 aluminum hydroxide (TUMS)

pH Scale (potential of Hydrogen) Lots of H+ IONS Lots of OH- IONS Few to NO IONS

ACTIVITY DIRECTIONS Observe: Which samples are acids & which are bases? Hypothesis: Discuss with your group. Experiment: Take a clean Qtip and insert it into the solution. Wipe it onto the paper. If it is a Base, it will turn the paper orange; if its an acid, it will erase the orange mark. Test all six substances. Conclusion: Which are acids & which are bases? 7

8

9 Learning Check 1 Describe the solution in each of the following as: 1) acid 2) base or 3)neutral. A. ___soda B. ___soap C. ___coffee D. ___ wine E. ___ water F. ___ grapefruit

10 Solution 1 Describe each solution as: 1) acid 2) base or 3) neutral. A. _1_ soda B. _2_ soap C. _1_ coffee D. _1_ wine E. _3_ water F. _1_ grapefruit

11 Learning Check 2 Identify each as characteristic of an A) acid or B) base ____ 1. Sour taste ____ 2. Produces OH - in aqueous solutions ____ 3. Chalky taste ____ 4. Is corrosive ____ 5. Produces H + in aqueous solutions

12 Solution 2 Identify each as a characteristic of an A) acid or B) base _A_ 1. Sour taste _B_ 2. Produces OH - in aqueous solutions _B_ 3. Chalky taste A 4. Is an electrolyte _A_ 5. Produces H + in aqueous solutions

13 Learning Check 3 Match the formulas with the names: A. ___ HNO 2 1) hydrochloric acid B. ___Ca(OH) 2 2) sulfuric acid C. ___H 2 SO 4 3) sodium hydroxide D. ___HCl4) nitrous acid E. ___NaOH5) calcium hydroxide

14 Solution 3 Match the formulas with the names: A. _4__ HNO 2 1) hydrochloric acid B. _5__Ca(OH) 2 2) sulfuric acid C. _2__H 2 SO 4 3) sodium hydroxide D. _1__HCl4) nitrous acid E. _3__NaOH5) calcium hydroxide

15 Arrhenius Acids and Bases Acids produce H + in aqueous solutions water HCl H + (aq) + Cl - (aq) Bases produce OH - in aqueous solutions water NaOH Na + (aq) + OH - (aq)