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SNC 2D1. WHAT IS AN ACID?

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Presentation on theme: "SNC 2D1. WHAT IS AN ACID?"— Presentation transcript:

1 SNC 2D1

2 http://www.youtube.com/watch?v=kcDSngXldB0 WHAT IS AN ACID?

3 Vinegar (Acetic Acid) Sour fruits like Lemon (Citric Acid) Vitamin C (Ascorbic Acid) HOUSEHOLD ACIDS

4 Commonly contain H + Water-soluble (this may make them more dangerous) Sour-Tasting Corrosive Conduct electricity PROPERTIES OF ACIDS

5 REACTIVE PROPERTIES OF ACIDS

6 Antacid (Aluminum Hydroxide) Baking Soda (Sodium Bicarbonate) Drain Cleaner (Sodium Hydroxide) HOUSEHOLD BASES

7 Commonly contain OH - Water-soluble (this may make them more dangerous) Bitter-Tasting Corrosive Conductive React with Protein (eg. those in your skin and eyes) PROPERTIES OF BASES *Another word for BASIC is ALKALINE

8 http://www.youtube.com/watch?v=DedE68fjKRM WHY YOU SHOULD WEAR GOGGLES

9 ELECTRICAL CONDUCTIVITY

10 When the chemical formula of an acid starts with H and has only one other non-metallic element, it is named by adding the prefix "hydro" and the suffix "ic" and the word "acid". HClHYDROCHLORIC ACID HFHYDROFLUORIC ACID NAMING ACIDS AND BASES

11 Acids that contain a polyatomic ion and an oxygen atom (oxyacids) can be named as follows: a) If the polyatomic ion ends in "ate" add the suffix "ic" and the word acid. b) If the polyatomic ion ends in "ite" add the suffix "ous" and the word acid. NAMING ACIDS AND BASES

12 SO 4 2- is Sulfate, so H 2 SO 4 SULPHURIC ACID SO 3 2- is Sulfite, H 2 SO 3 SULPHUROUS ACID NAMING ACIDS AND BASES

13 The name of a base can be determined from the name of the positively charged metallic ion or polyatomic ion at the beginning and then adding the word "hydroxide". NaOH SODIUM HYDROXIDE NH 4 OH AMMONIUM HYDROXIDE NAMING ACIDS AND BASES

14 Some bases are more difficult to recognize. Substances that contain BICARBONATE or HYDROGEN CARBONATE, HCO 3 - are bases because they react with water to form hydroxide ions Ex: NaHCO 3 SODIUM BICARBONATE NAMING ACIDS AND BASES

15 -Textbook pg. 271 #1-7 -Acids and Bases Summary Table HOMEWORK


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