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Acids and Bases The pH scale
What do vinegar, lemons, and orange juice have in common?
Characteristics of Acids Taste Sour React with metals Often produce hydrogen gas Can burn your skin
What do milk, Comet, and Tums have in common?
Characteristics of Bases Taste Bitter Feel Slippery Neutralize Acids –Antacids Dissolve grease
But, what exactly are acids and bases?
Substance that ionizes in water to give hydrogen ions (H + ) Acid
Examples of Acids HCl H 2 SO 4 HNO 3 HF Juices
Substance that ionizes in water to give hydroxide ions (OH - ) Base
Examples of Bases NaOH Ca(OH) 2 KOH Soap, Ammonia, Baking Soda
The pH Scale Measurement system that indicates the concentration of H + ions in solution. –The pH scale ranges from 0 to 14.
The pH Scale pH = “power of hydrogen” –Each step increases by a power of ten
Acidic Solutions Solutions with a pH below 7 are called acidic because they have more H + ions than OH - ions. The lower the pH, the greater the acidity.
Basic Solutions Solutions with a pH above 7 are called basic because they have more OH - ions than H + ions. The higher the pH, the more basic the solution.
pH and Water Why does water have a pH of 7? –H–Hydronium ions = hydroxide ions –(–(H + ) = (OH - ) H 2 0H + + OH -
Interesting fact… Water can act as an acid or a base!!!
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, Acids and Bases.
An introduction to the properties of acids, bases, and the pH scale.
PH is the measurement of the concentration of H+ ions in a solution. (Or how acidic or basic a solution is.) 1. The pH scale has a range from 1 to 14.
Chemistry Notes: Acids and Bases
Chapter 6.3 Acids, Bases, and pH. What are acids? substances that give up (donate) hydrogen ions when you dissolve them in water. the donated hydrogen.
Acids and Bases. Properties of Acids: Properties of ACIDS: 1. tastes sour.
Acids and Bases A Short Introduction Acids and Bases Are Everywhere Look around you and every liquid you see will probably be either an acid or a base.
I. Introduction to Acids & Bases Acids & Bases. A. Properties electrolytes turn litmus red sour taste react with metals to form H 2 gas slippery.
TCAP Review Lesson 17 Vocabulary Foldable (IX)
ACIDS, BASES, and pH.
Acids & Bases.
Pg of composition notebook. Acid: Substance that donates Hydrogen ions (H + ) to a solution. Or forms H 3 O + (hydronium ions) with water
Bonds of Water- strong › Can break into hydrogen ion (H + ) and hydroxide ion (OH - ) H 2 O H + + OH -
Acids and Bases.
Acids and Bases Chapter 15. Acids a substance which when added to water produces hydrogen ions (H + ) hydronium (H 3 O + ) is created Water + Hydrogen.
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.
Acids and Bases. Properties of Acids þ Produce H + (hydrogen) ions in water þ Taste sour þ Corrode metals þ React with bases to form a salt and water.
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, & SALTS ACIDS Contain hydrogen ions, H + also called hydronium ions, H 3 O + Taste sour (remember not to taste chemicals as a rule) Dangerous.
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