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Chapter 9 Acids, Bases, and Salts. Lesson 3 Notes. Vocabulary. Acid – substance that tastes sour and turns blue litmus paper red. Base – substance that feels slippery, tastes bitter, and turns red litmus paper blue. Indicator – substance that shows whether an acid or base is present.
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Chapter 9 Acids, Bases, and Salts Lesson 3 Notes
Vocabulary Acid – substance that tastes sour and turns blue litmus paper red. Base – substance that feels slippery, tastes bitter, and turns red litmus paper blue. Indicator – substance that shows whether an acid or base is present. pH – system for measuring the strength of acids and bases. Salt – what forms when a strong acid and a strong base react with each other. Typically made from and metal and nonmetal.
Acids and Bases • Acids, bases, and salts are special types of compounds. • Acids and bases have their own unique properties. AcidsBases • Taste sour - Tastes bitter - Turn blue paper red - Turns red paper blue - Releases H - Accepts H • Reacts easily - Reacts easily with bases with acids • We measure the strength and weakness of an acid or base by using a pH scale.
Salts • When an acid and a base react they form a salt. • Salts are typically formed from a metal and nonmetal. • Although we think of salt as NaCl (table salt) there are many different forms of salt. • You can find salts in many places, including ocean water, on your kitchen table, and on roads.
Time to think… • How could you make a salt from other compounds? • Your friend tells you that your soda is an acid. You don’t believe him. Design an experiment that will prove to your friend that you are right. Include a control and a variable.