lab report chemistry

Table 8.1- Combustion of magnesium ribbon
Observations
Reaction was exothermic; magnesium ribbon burned and was glowing a bright white color when ignited.
Reactants:
Mg and O2
Products:
MgO
Balanced chemical equation
2Mg + O2  2MgO

Table 8.2- Combustion of heptane
Observations
When holding test tube inverted over heptane flame, condensation formed against top walls of the test tube. When the burning splint was added the walls of the test tube became less foggy from the condensation formed from the heptane flame.
Reactants:
C7H16 and O2
Products:
CO2 and H2O
Balanced chemical equation
C7H16 + O2  7CO2 + 2H2O

Table 8.3- Single replacement reaction of sodium
Observations
Test tube was hot after reaction; exothermic reaction took place; sodium was malleable; when sodium was added to diH2O it popped and fizzled; solution turned pink when phenolphthalein was added.
Reactants:
Na and H2O
Products:
H2 and NaOH
Balanced chemical equation
2Na + 2H2O  2NaOH + H2

Table 8.4- Single replacement reaction of lithium
Observations
Test tube was hot after reaction; exothermic reaction took place; lithium was not malleable; when lithium was added to diH2O it popped and fizzled; splint got brighter when added to test tube; solution turned pink when phenolphthalein was added.
Reactants:
Li and H2O
Products:
H2 and LiOH
Balanced chemical equation
2Li + 2H2O  2LiOH + H2

Table 8.5- Single replacement reaction of potassium
Observations
Lithium was malleable; splint ignited; test tube was cold after the reaction took place; turned pink when phenolphthalein was added.
Reactants:
K and H2O
Products:
H2 and KOH
Balanced chemical equation
2K + 2H2O  2KOH + H2

Table 8.6- Chemical reaction of copper strip and 4 mL silver nitrate
Observations
Precipitate formed on copper strip; precipitate was greenish brown in color.
Reactants:
Cu and AgNO3
Products:
Cu(NO3)2 and Ag
Balanced chemical equation
2AgNO3 + Cu  Cu(NO3)2