Unit 1 Chemistry
Boyles LawA B CCharles LawA B CCombined Gas LawA B CStates of MatterA B CConservation of MassA B CPhase DiagramsA B CKinetic Molecular TheoryA B CBalancing EquationsA B CGas Law EquationsA B C GraphsA B C Mole CalculationsA B CKelvin ScaleA B CBoyles Law AWhat does Boyles Law state?That as the pressure on a gas increases the volume will decrease.
Boyles Law BWhat type of relationship do we see in Boyles Law?
Indirect relationship; as one variable goes up the other goes down.
Boyles Law CUsing the Kinetic Theory of Matter explain how Boyles Law works.Kinetic Theory states that the particles in a gas are very far apart. Therefore when you compress a gas the particles move closer but do not have contact.
Charles Law A
What does Charles Law state?That as you increase the temperature on a gas the volume will increase also.Charles Law BWhat type of relationship do we see in Charles Law?Direct Relationship, as one variable goes up so does the other.
Charles Law CUsing the Kinetic Theory of Matter explain how Charles Law works.Kinetic Theory states that as the temperature increases the atoms which are in constant motion will move faster and expand. This causes an increase in volume.
Combined Gas Law AWhat is the combined gas law?It is the combination of Boyles and Charles Law because it is rare in the real world that only one variable will change at a time.
Combined Gas Law BWhat is the equation for the combined gas law?P1V1/T1 = P2V2/T2 orPV/T = k
Combined Gas Law CDescribe a circumstance in which the combined gas law would be used.Your answer should include a discussion of a temperature change and/or a pressure change and how the volume would change because of that.
States of Matter AWhat are the three states of matter and how are they different according to the Kinetic Theory of Matter?Solid: very slow moving, close together particlesLiquid: faster moving, they move in two dimensionsGas: very fast moving and very far apart, they move in three dimensions
States of Matter BIs there ever a time where we can have more than one state of matter of the same material existing at a time?Yes, anytime it is going through a phase change we have two states existing at the same time.
States of Matter CWhat do we call all the changes in phase and what phases are they going to?Melting: solid-liquidBoiling: liquid-gasEvaporation: liquid- gas below boilingCondensation: gas- liquidFreezing: liquid- solidSublimation: solid-gas
Conservation of Mass AWhat does the Law of Conservation of Mass state?That matter(mass) is neither created nor destroyed it simply changes form. This means that we cannot lose any mass in a chemical reaction.
Conservation of Mass BConservation of Mass is used as the reason that we balance chemical equations; please explain why.If mass cannot be created or destroyed then the number of atoms on one side of the chemical reaction should match the number on the other side.
Conservation of Mass CWhen you balance an equation do the elements have to be combined in the same way on both sides of the equation?No, as long as there is the same number of elements of each type.
Phase Diagrams AUsing the phase diagram below please explain what is happening at the S-L line.
At the S-L line the substance is melting and freezing at various pressures.Phase Diagrams BWhat is the pressure when the substance condenses at 50C?200 mmHg; 400 mmHg; 20 mmHg
About 200 mmHgPhase Diagrams CWhat is the triple point?It is the point at which all 3 states of matter can exist at the same time.
Kinetic Molecular Theory AWhat does the kinetic theory state?All gases consist of molecules and that those molecules are in motion. They are very far apart compared to solids and liquids and when they collide with each other it is perfectly elastic. The attractive forces between the gas molecules is very weak and that the temperature of a gas is directly proportional to the average kinetic energy of the gas
Kinetic Molecular Theory BUsing the kinetic theory explain why a liquid thermometer reads higher at higher temperatures.The higher the temperature the faster the particles move and the more they collide with the thermometer. As they collide faster they apply pressure to the outside of the thermometer causing the liquid inside to rise higher.
Kinetic Molecular Theory CWhat do the dotted lines indicate on the graph below?
The boiling points for each set of molecules.Balancing Equations ABalance the following equation:__H2SO4 +__ NaCl __Na2SO4 +__ HCl1; 2; 1; 2
Balancing Equations BBalance the following equation:__KI + __BPO4 __K3PO4 + __BI33; 1; 1; 1
Balancing Equations CBalancing the following equation:__C6H12O6 + __O2 __CO2 + __H2O1; 6; 6; 6
Gas Law Equations AA gas has an initial pressure of 1 atm and a volume of 4.6L. Pressure is applied to the gas decreasing the volume to 2.2 L, what is the new pressure?
1atm x 4.6L = 2.2L x ?? = 2.1 atmGas Law Equations BA gas has a temperature of 125 C and a volume of 11.3 L, if the volume is increased to 5.3 L what is the new temperature?
11.3L/ 398 = 5.3L / T
189 KGas Law Equations CA gas has a volume of 12.3 mL at STP, what volume will it occupy at 100C and 4 atm?
12.3 ml( 1atm)/ 273 = V(4 atm)/373
4.20 mlGraphs AWhat law does the following graph represent? What relationship is it?
Indirect relationship; Boyles LawGraphs BWhat relationship is shown by the graph below, what gas law is it?
Direct relationship; Charles LawGraphs CIn the graph below, as we move to the right what is happening to the temperature?
It is increasingMole Calculations AIf there is 55 g of CO2 gas, how many moles is that?
55 g / 44 g/mole = 1.25 moles of CO2Mole Calculations BIf we have 3 moles of a gas how many liters does it take up?
3 moles x 22.4 L/mole = 67.2 LMole Calculations CIf there 1.204 x 1024 molecules of H2 in a beaker, how many L will that take up?
1.204 x 10 24/ 6.02 x 1023 = 2 moles2 moles x 22.4 L /mole = 44.8 LKelvin Scale AHow do we convert between C and K?
K = C +273Kelvin Scale BWhat do we convert to Kelvin when we solve Charles and Combined gas law equations?
Because the Kelvin scale is based on absolute zero you can never have a negative value.Kelvin Scale CWhat is 551 K in C?