All reactions from 1-4 are combination reactions.

1.  Hydrogen and Oxygen Gas
Hydrogen gas reacts with oxygen gas to produce water vapor.  The reaction releases - 241.8 kJ/mol product.
A. Balanced Equation:
B. _________ is oxidized from __________ to ___________ and _________ is reduced  from __________ to ___________ 

2. Iron Metal and Oxygen Gas:
Iron metal reacts with oxygen gas to produce iron (III) oxide.  The reaction releases -824.2 kJ/mol product.
A. Balanced Equation:   
B. _________ is oxidized from __________ to ___________ and _________ is reduced  from __________ to ___________ 

3. Zinc Metal and Sulfur Crystals: 
Zinc metal reacts with sulfur crystals to produce zinc sulfide. The reaction releases -206.0 kJ/mol product.
A. Balanced Equation:
B. _________ is oxidized from __________ to ___________ and _________ is reduced  from __________ to ___________ 

4. Calcium Oxide and Water: 
This reaction forms dissolved calcium hydroxide.  The reaction releases -64.5 kJ/mol product.
A. Balanced Equation:
B. _________ is oxidized from __________ to ___________ and _________ is reduced  from __________ to ___________ 

All reactions from 5-8 are decomposition reactions.

5. Zinc Oxide:
Upon heating (20000C) it forms zinc metal and oxygen gas.  The reaction absorbs +350.5 kJ/mol reactant.
A. Balanced Equation:
B. _________ is oxidized from __________ to ___________ and _________ is reduced  from __________ to ___________ 

6. Copper II Hydroxide:
When heated it decomposes into copper II oxide and water.   Provide two versions of response separated with exactly 6 asterisk symbols: ******.
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