Chemistry Goal 10. Substances can be classified as acid, base, or neutral based on their pH. Acids...

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Acids, Bases, and pH Chemistry Goal 10

Transcript of Chemistry Goal 10. Substances can be classified as acid, base, or neutral based on their pH. Acids...

Page 1: 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 pHChemistry Goal 10

Page 3: 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.

Substances can be classified as acid, base, or neutral based on their pH.

Acids and bases are solutions usually with water as a solvent.

Page 4: 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.

Can be identified by: ◦ Sour taste◦ Reacts with some metals◦ Reacts with bases to form a neutral pH solution◦ pH is less than 7; the lower the number, the more

acidic the solution

Acids

Page 5: 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.

Can be identified by:◦ Bitter taste◦ Slippery feel◦ Reacts with acids to form a neutral pH solution◦ pH is greater than 7; the higher the number, the

more basic the solution.

Bases

Page 6: 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.

Is neither an acid nor a base Pure water is neutral and has a pH near 7

Neutrals

Page 7: 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.

Substances that can be used to determine whether a solution is acidic, basic, or neutral.

Indicators

Page 8: 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.

Changes color in the presence of an acid or a base

Blue litmus paper turns red in an acid and stays blue in a base. ◦ BRA

Red litmus paper turns blue in a base and stays red in an acid. ◦ RBB

Litmus Paper

Page 9: 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.

What Color does Litmus Paper Turn?

Page 10: 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.

Test for a base ONLY Is colorless and turns magenta (bright pink)

in the presence of a base Stays colorless in acidic and neutral

solutions

Phenolphthalein

Page 11: 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.

Has a range of colors depending on the pH of the solution

The color of the paper is compared to a chart to determine the actual pH number.

pH Paper

Page 12: 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.

What is the pH?

A = ______

B = ______

C = ______

D = ______

Page 13: 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.

Red Cabbage Juice IndicatorTest for Acids and BasesThe color of the solution is compared to a chart to determine pH

Zoom Kitchen Lab from Friday

Page 14: 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.

So you think you know about acids and bases?Make a copy of the data sheet on Edmodo