CHEMISTRY

UNIT: CHEMICAL REACTIONS

Name: ______Date: ______MOD: ______

Student Sheet: Types of Chemical Reactions

OBSERVATIONS

DATA TABLE
Procedure / Reaction / Observations
3 / Burning Mg
4 / Mg and HCl
5 / H2O2 , with MnO2
6 / Heating (NH4)2CO3
7 / KI and Pb(NO3) 2
8 / Al and CuSO4
9 / NaOH and HCl
10 / Fe and S
11 / Heating CuCO 3

ANALYSIS

1.  Some of the reactions in this investigation produced gaseous products, such as carbon dioxide (CO2), oxygen (O2), hydrogen (H2), ammonia (NH3), and water vapor (H2O). In the chart below indicate which reactions produced these products and how you verified the identity of the gas.

Gas produced / Procedure Number(s) / Evidence
CO2
O2
H2
NH3
H2O

2.  In some reactions solids are decomposed or formed. In the chart below summarize the changes in physical properties and identify one of the new products.

Procedure / Reactant properties / Product properties / Identity of product
Burning
Mg
KI and
Pb(NO3) 2
Al and
CuSO4
Procedure / Reactant properties / Product properties / Identity of product
Fe and S
Heating CuCO3

3.  In procedure #9, you mixed an acid (HCl) and a base (NaOH). This is called a neutralization reaction. The products are water and a salt.

Describe how your observations show that:

a.  the acid neutralized the base

______

b.  water was a possible product

______

c.  NaCl (table salt) was a possible product

______

4.  In which procedure in this lab was a catalyst added to speed up the reaction? How do you know? ______

______

5. Now that you have identified some of the products, classify the reactions as synthesis (combination), decomposition, single replacement, or double replacement.

Balanced equation / Reaction type
2 Mg + O2 ® 2 MgO
Mg + 2 HCl ® H2 + MgCl2
2H2O2 ® 2 H2O + O2
(NH4)2CO3 ® 2NH3 + CO2 + H2O
KI + Pb(NO3) 2 ® PbI2 + 2KNO3
2Al + 3CuSO4 ® Al2 (SO4)3+ 3Cu
NaOH + HCl ® NaCl + H2O
Fe + S ® FeS
CuCO3 ® CuO + CO2

1