What Are Salts? What Are They Made up Of? Give Some Examples

5.2 SALTS Name:

Date:

Block:

(Refer to pp. 234 - 243 of BC Science 10)

What are salts? What are they made up of? Give some examples.

______

How are salts formed? (Which chemical reactions produce salts?)

1.  ______

2.  ______

3.  ______

1.  ACID-BASE NEUTRALIZATION (p. 236)

·  Neutralization reactions occur when an ______and a ______react to produce a ______and ______.

HCl(aq) + NaOH(aq) ® NaCl(s) + H2O(l)

acid base salt water

2  Examples:

H2SO4 (aq) + Al(OH)3 (aq) à

CH3COOH (aq) + Mg(OH)2 (aq) à

**Complete the Practice Problems on page 236.

1.

2.

3.

4.

5.

3  ACIDS AND METALS (p. 238)

a.  The most reactive metals, at the bottom of groups ____ and ____ on the periodic table, react vigorously with ______and ______.

b.  All other metals are ______reactive than those in groups 1 and 2.

c.  When metals do react with acids, ______gas is usually released.

2HCl(aq) + Mg(s) ® MgCl2(s) + H2(g)

acid metal salt hydrogen gas

Another Example:

**Complete practice problems on page 238

4  ACIDS AND CARBONATES (p. 239)

a.  Carbonates ______acids, protecting locations with natural carbonate supplies from ______.

H2SO4(aq) + CaCO3(s) ® CaSO4(s) + H2O(l) + CO2(g)

acid carbonate salt water carbon

dioxide

Another example:

HNO3 + CaCO3 à

**Practice Problems:

1.  H3PO4 + CaCO3 →

2.  HCl + CaCO3 →

METAL OXIDES AND NON-METAL OXIDES (p. 237)

·  Metal oxides react with water to form ______.

Na2O(s) + H2O(l) ® 2NaOH(aq)

·  Non-metal oxides react with water to form ______.

SO2(g) + H2O(l) ® H2SO3(aq)

w  ______oxides are formed from the burning of fossil fuels.

w  Acid added to water in the atmosphere = ______.

v  Oxides from elements on the left and centre of the periodic table form ______in water.

v  Oxides of elements on the upper right-hand corner of the periodic table form ______in water.

**Complete p. 243 #9, 10,11 and 12.

Complete WB 5.2 pages from 91 to 94.