Acids & Bases: The pH Scale. What is a solution?  A mixture containing more than 1substance Examples:

Slides:

Advertisements

Similar presentations

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

Advertisements

PH Scientists use something called the pH scale to measure how acidic or basic a liquid is The scale looks at the concentration of positively charged hydrogen.

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.

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

MIXTURES AND SOLUTIONS. MIXTURE a combination of substances in which the individual components retain their own properties. a combination of substances.

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

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

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

Acids and Bases. Acids Properties –a substance that produce hydrogen ions (H + ) in solution –conduct electricity well –can taste sour –corrosive (“eat.

Acids and Bases They don’t blow up in your faces!.

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

8.3 Properties of Acids and Bases Acid- a compound that produces hydronium ions (H3O) when dissolved in water. Examples: vinegar, carbonated drinks, stomach.

H+ Acids and Bases OH-.

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

ACIDS AND BASES PH.

Acids, Bases & pH. WATER Before understanding Acids and Bases, you must understand water. 1. It is a polar covalent molecule. Like a magnet

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.

 What does it stand for?  Percent Hydrogen ions (H+)

Acids and Bases.  An acid is a compound that dissolves in water to form a solution with a pH lower than 7  A base is a compound that dissolves in water.

Get Ready! Materials 1.Pencil 2.Notebook Today’s Agenda 1.5-in-5 2.Acid & Base Notes 3.Lab 4.Exit Ticket 1.5-in-5 2.Acid & Base Notes 3.Lab 4.Exit Ticket.

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

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

Properties of Acids and Bases Chapter 6. Acids, Bases, and pH 1. When a water molecule is separated, it separates into two ions 2. Ions are slightly charged.

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

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.

Working with solutions Solutions and suspensions Suspension-a mixture in which particles can be seen and easily separated by settling or filtration Solution-

Acids, Bases, and pH.

Measuring acids and bases

Acids & Bases Adapted by: Mrs. Dube

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

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

8.3 Properties of Acids and Bases

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

Warm Up What physical and chemical properties do you think that an acid might have? A base?

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

Acids and Bases 3/27/17.

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

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

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

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

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

They are everywhere.. In your food In your house EVEN IN YOU!!!!! p.65

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

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

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

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

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

Notes: The pH Scale The pH scale is used to measure the strength of an acid or a base. pH scale runs from 0 to 14.

SOLUTIONS and pH.

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

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

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

Solutions Chapter 2.

Solutions Chapter 2.

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

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

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

Solutions Chapter 2.

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

Acids and Bases When water dissociates,

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

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

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

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

Solutions and pH Chapter 2.

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

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

Presentation transcript:

Acids & Bases: The pH Scale

What is a solution?  A mixture containing more than 1substance Examples:

What’s in a solution?   Solute Substance that is dissolved in the solution   Solvent What the solute is dissolved in For example, in a salt water solution the salt is the solute and the water is the solvent Water is the UNIVERSAL SOLVENT!

What are some types of solutions?  Your body contains lots of solutions too! Blood Blood Saliva Saliva Stomach fluid Stomach fluid Urine Urine  Different solutions have different characteristics so they are used for different things  3 Major Types Neutral Neutral Acidic Acidic Basic/Alkaline Basic/Alkaline

What is the pH scale?  A scale that measures the acidy or alkalinity of a substance  The scale goes from 0 to 14 7 marks a NEUTRAL solution < 7 marks an ACIDIC solution > 7 marks a BASIC / ALKALINE solution Acid Neutral Base

What are the properties of a NEUTRAL solution?  pH = 7  Equal amount of hydrogen ions (H + ) and hydroxide ions (OH - )  Example: WATER! Keeps balance in your body Keeps balance in your body 2/3 of your body weight is water 2/3 of your body weight is water

What are the properties of an ACIDIC solution?  pH below  Characteristics Sour taste Sour taste Conduct electricity Conduct electricity Break down substances (corrosive) Break down substances (corrosive)  Examples: Citrus fruits Citrus fruits Battery acid Battery acid Phosphoric acid in pop Phosphoric acid in pop

What are the properties of a BASIC / ALKALINE solution?  pH above  Characteristics Bitter taste Bitter taste Slippery to touch Slippery to touch Break down substances (cleans) Break down substances (cleans)  Examples: Soaps Soaps Cleaning supplies Cleaning supplies Laxatives Laxatives

What are buffers?  Solutions that RESIST a change in pH  Keep adding acid or base, but the pH doesn’t change!  VERY important in the body Help keep the pH levels in your body constant Help keep the pH levels in your body constant

What is ?  pH is measured using ROY G BV ROY = Acid ROY = Acid G = Neutral G = Neutral BV = Base/Alkaline BV = Base/Alkaline

Now it’s time to write a summary! Write 3 sentences that briefly describe the topic just discussed!