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Chapter 20 Section 1. Acids : -taste sour -aqueous solutions of acids are electrolytes -cause indicators to change color (ex- blue litmus paper will turn red) -can dissolve metals -can burn skin -can neutralize a base (will form salt and water when reacted with a base).

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chapter 20 section 1
Chapter 20 Section 1

Acids:

-taste sour

-aqueous solutions of acids are electrolytes

-cause indicators to change color (ex- blue litmus paper will turn red)

-can dissolve metals

-can burn skin

-can neutralize a base (will form salt and water when reacted with a base)

slide2

acid- a compound that produces hydrogen ions when dissolved in water

ex- HCℓ(aq)  H+(aq) + Cℓ-(aq)

-acids are compounds dissolved in water

-will have (aq)

-always begin with hydrogen (H)

Ex- HCℓ H3PO3 H2SO4

slide3

Rules for Naming Acids

-you must look at what follows the hydrogen

1) if single element (ends in –ide), use prefix hydro-, root of the element, -ic ending and the word acid

ex- HCℓ

hydrochloric acid

slide4

2) if what follows hydrogen ends in –ite, add –ousending to root of the polyatomic ion and add acid

ex- H3PO3

phosphorous acid

3) if what follows hydrogen ends in –ate,add –icending to root of the polyatomic ion and add acid

ex- H2SO4

sulfuric acid

**Reverse rules to write formulas from name

slide5

Try these!!

HI H2CO3 H2SO3

hydroiodic acid

carbonic acid

sulfurous acid

Write formulas for:

nitrous acid

HNO2

hydrosulfuricacid

H2S

chloric acid

HCℓO3

slide6

Base- a substance that produces OH- ions in aqueous solution

ex- NaOH(aq)  Na+(aq) + OH-(aq)

*also known as alkaline

Bases

-taste bitter

-slippery feeling

-can be strong or weak electrolytes

-can neutralize an acid (will form salt and water when reacted with an acid)

-cause indicators to change color (ex- red litmus paper will turn blue)

slide7

Naming Bases

*all bases end with –OH

-named the same way we name ionic compounds

1) name cation

2) add word hydroxide

ex-

NaOH

sodium hydroxide

calcium hydroxide

Ca(OH)2