Chemical Reactions
Please write the definition of conservation of matter.
Matter cannot be created nor destroyed, only transformed from one form to another.
What is the definition of temperature?
The measure of the motion of molecules.
How many protons, neutrons and electrons does a neutral atom of oxygen and an ion of oxygen have?
O0: P+=8; n0=8; e-=8
O-2: P+=8; n0=8; e-=10
Write the equation for Molarity.
Molarity = moles of solute/Liters of solution
What is an Arrhenius Acid?
A substance that donates an H+ ion in solution.
What type of reaction is the following chemical equation:
CaO + H2O --> Ca(OH)2
Synthesis
Draw an example energy curve for an exothermic reaction.
How many valence electrons does phosphorus have?
5
What are 2 ways that I could increase the molarity of a solution?
Increase the amount of solute or decrease the amount of solvent in the solution.
Write the name for HCl.
hydrochloric acid
What type of reaction is the following equation:
2Mg + O2 --> 2MgO
Combustion
Draw an example energy curve for an endothermic reaction.
Draw the lewis model for nitrogen boron triastatide.
Ions are atoms that have gained or lost what?
Electrons
Write the formula for chloric acid.
HClO3
Write the balanced chemical equation for magnesium metal reacting with copper (I) sulfate.
Mg(s) + Cu2SO4(aq) --> MgSO4(aq) + 2Cu(s)
During our Candle Exploratory we stated that we "lost" energy, but we also stated that energy cannot be created nor destroyed... How can both statements be true?
Energy cannot be created nor destroyed. In the candle exploratory, the "lost" energy escaped our system into the environment around us such as the air or the table.
Draw the lewis model and name the shape for the magnesium iodide.
Write the ionic equation for the reaction of sodium chloride and silver nitrate.
Ag+1(aq) + NO3-1(aq) + Na+1(aq) + Cl-1(aq) --> AgCl(s) + Na+1(aq) + Cl-1(aq)
Write the name for H2SO3.
sulfurous acid
Please write the balanced chemical equation for the combustion of ethane (dicarbon hexahydride)
2C2H6(g) + 7O2(g) --> 4CO2(g) 6H2O(g)
How many calories were absorbed by 250.mL of water using propane to raise the temperature from 22.5oC to 50.0oC?
6,880oC
Please draw the lewis model and name the shape for phosphorus trifluoride.
Write the balanced chemical, ionic and net ionic equations for the reaction of nickel (III) chloride and potassium phosphate.
NiCl3(aq) + K3PO4(aq) --> NiPO4(s) + 3KCl(aq) <-- BCE
Ni+3(aq) + 3Cl-1(aq) + 3K+1(aq) + PO4-3(aq) --> NiPO4(s) + 3K+1(aq) + 3Cl-1(aq) <-- Gross Ionic
Ni+3(aq) +PO4-3(aq) --> NiPO4(s) <-- Net Ionic
What is the molarity of my 10.0mL hydrochloric acid solution if it took 5.0mL of a 1.00M sodium hydroxide solution to neutralize it?
0.50M HCl