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Atomic Theory
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Lucy noticed that her coin collection had begun to tarnish. Some of the metal in the coins had begun to change color. The formation of tarnish is most similar to which of the following changes?

Lucy noticed that her coin collection had begun to tarnish. Some of the metal in the coins had begun to change color. The formation of tarnish is most similar to which of the following changes?

shredding a piece of paper into hundreds of tiny strips

dropping a dinner plate on the floor

melting ice cubes in a glass of juice

burning a piece of paper to ashes in a fireplace

Slide 152

Decomposition

Decomposition

Simple Reactions

Synthesis

(Combination)

Single

Replacement

Double

Replacement

Slide 153

Decomposition

Decomposition

Synthesis

Single

Replacement

Double

Replacement

A

B

A

B

+

A

B

A

B

+

A

B

A

B

+

C

+

C

A

B

A

B

+

C

+

C

D

D

Slide 154

Decomposition

Decomposition

Synthesis

Single

Replacement

Double

Replacement

A

B

A

B

+

A

B

A

B

+

A

B

A

B

+

C

+

C

A

B

A

B

+

C

+

C

D

D

Slide 155

+

+

+

+

+

+

+

Synthesis

Decomposition

Single

Replacement

Double

Replacement

Slide 156

A displacement reaction:

A displacement reaction:

metallic copper with silver nitrate

Cu + Ag NO3

Ag + Cu(NO3)2

Slide 157

Balancing equations

Balancing equations

Slide 158

Ag + Cl2 AgCl

Ag + Cl2 AgCl

Total

atoms

1

2

1

1

Both sides must be equal

for ALL atoms.

2

2

2

Slide 159

Ag + Cl2 AgCl

Ag + Cl2 AgCl

Total

atoms

1

2

1

1

Both sides must be equal

for ALL atoms.

2

2

2

2

2

Conservation of Matter

Slide 160

CH4 + O2 CO2+ H2O

CH4 + O2 CO2+ H2O

1

2

1

2

4

2

1

Slide 161

CH4 + O2 CO2+ H2O

CH4 + O2 CO2+ H2O

1

2

1

2

4

2

1

2

2

4

Slide 162

CH4 + O2 CO2+ H2O

CH4 + O2 CO2+ H2O

1

2

1

2

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