SY 2017/2018 2 nd Final Term Revision Student s Name: Grade: 10 B & C Subject: CHEMISTRY Teacher Signature
1- Complete. a-avogadros law b-henrys law REVISION SHEET CHEMISTRY GR-10B 2-What is the difference between a- Immiscible and miscible b- Electrolyte and nonelectrolyte
c- Solvent and solute 3- Define. a- Solution b- Collids c- Saturated solution d- Solution equilibrium
e- Hydration f- Molarity 4-Write true or false. a-molarity is the moles of solute per kilogram. b-the solubility of liquids increases as temperature increases. c-the rapid escape of a gas from a liquid in which it is dissolved is known as effervescence. 4-A solid aerosols a solid dispersed in a gas such as smoke. 5-A solid emulsion liquid dispersed in solid such as cheese. 6-Equal volumes of gases at the same temperature and pressure contain unequal molecules. 7- The volume of 1 mole of any gas at STP is equal 22.4 L.
8-in the reaction H2 +O2---H2O the total number of moles of reactants and product is = 5. 5- Fill in blanks. a- In the equation representing the ideal gas law,the constant gas law R is known as the. b- The of a solution is a measure of the amount of solute in a given amount of solvent or solution. c- is the number of mole of solute in one liter of solution. d- The net amount of energy absorbed as heat by the solution when a specific amount of solute dissolves in solvent is the. 6- Given 3.5 L of solution that contains 90 g of sodium chloride ( Nacl).What is the molarity of solution ( molar mas of NaCl =58 g)
7- You have 0.8L of 0.5M HCl solution.how many moles of HCl does the solution contain. 8-What is the molarity of solution composed of 5.58g of KI dissolved in water to make 0.125 L OF solution. ( molar mass of HCL = 36g ) 9- Compare the rate of effusion of hydrogen and oxygen at the same temperature and pressure (M-O2=32, H2= 2)
10 - Compare the rate of EFFUSION OF CO2 with that of HCL at the same temperature and pressure ( M-C02= 44,HCL=36 ). 11-a- What volume does 0.068 mole of gas occupy at STP. b-what quantity of gas in moles is contained in 2.2 L at STP. 12-At STP what is the volume of 7.08 mole of nitrogen gas.
13-What pressure in atmosphere is exerted by a 0.5 mole of nitrogen gas in 10 L container at 298 k ( p= Nrt/v, r= 0.082) 14- What pressure in atmospheres is exerted by 0.325 mole of H2 gas in 4.08 L at 298k, R=0.082) 15 IDENTIFY the solvent and the solute a- Sugar in water. b- C02 in alcohol.
16- Fill in the blanks. 1-In the reaction the total numbers of molecules are H2 +CL2 ----2HCL a- 1 b- 2 c- 3 d- 4 2- If one mole of any gas occupy at a STP a volume =22.4 L Then ½ mol occupy a volume a- 11.2 b- 5.6 c- 22.4 d- 44.8 3-The standard volume of a gas at STP equal a- 11.2 L b- 5.6L c- 22.4 L d- 44.8L 4- At STP what is the volume of 10 mole of nitrogen gas a- 22.4 L b- 224 L c- 5.6 L d- 11.2 5- If a temperature of a gas is 27C 0 then in Kelvin the temperature a- 289 b-298 c- 300 d -250 6-A number of moles equal a- Mass/molar mass b- molar mass/mass c-moles / volume d- volume/ moles 7-The molality equal a-moles /molar mass c-mass/volume b-moles / volume d-moles
8-The ideal law gas equation a- PV=NRT b- PV= RT c-pv/nrt d PV- NT 9- The unit of a gas volume a- Kg b- liter c-mole d- m/s 10-Which one of the following gases has the fastest rate of effusion a- H2 B- N2 c- O2 d-f2 ( H=2, N=7,O=8,F=9) 11-How many moles are contained in 36g of H2O (molar mass H20= 18) 12-The volume in liter occupy by 2 mole of O2at 300k and 2 atm.given R=1 a- 150 L b- 300L c- 600l d- 75L 13-The mass of 2 mole of water ( H2O = 18 ) a- 9g b- 18g c- 36g d- 72g 14-When a salt dissolved in water. The solute a- Water b- alcohol c- a salt d- hydrogen 15- When alcohol dissolved in water the solution called a-gas in gas b- gas in liquid c- liquid in liquid d- liquid in solid 16-The unit of molality a-mole/ liter b- liter/ mole
c- kg/ mole d- mole 17-The molality of 5mole of 10 L of HCL a- 5 M b- 10L b- c- ½ M d 2M 18- The rates of effusion and diffusion for gases depend on the molecules a- Mass b- attraction b- c- moles d- velocity 19 Salt water is an example of a- Heterogeneous b- homogeneous c- is not a mixture d - metals 20 Oxygen in nitrogen is an example of a-solid in liquid b- liquid in liquid c- liquid in solid d- gas in gas