Enthalpy definitions quiz wordsearch (OCR)

HideShow resource information
J E N T H A L P Y Y M R O A H F X T S V H
M A V E R A G E B O N D E N T H A L P Y U
J T S E X O T H E R M I C V Y U Y W F V R
E X I J L O R U J X S W E G G B J U F F G
N S S Y V U N D S B L L A C R L X I Q C Q
T T E F E D E D T K T A I L E L C B B K V
H G H Y K D D P M A J B G E N M T S O N M
A S T T I X B X Q L U H O K E N I S N O M
L B N G R T F R E R E P S C N F P B D M M
P D Y T H H X L H L U B D I O B D H E V G
Y P S T A N D A R D C O N D I T I O N S M
C A O A I I T V R P Y B D Y T D I R T N E
Y E T U R L V O K V W I G H A U G S H N Q
C B O T E C I L D I Q H P Y V Y I Q A C C
L M H D B K U A C A P U C K I J U J L Q V
E E P N S I S T I K X I G Q T W Y Q P C Y
V Q B F A H T X F T N L F X C W A R Y K G
O J L R J V K N U A N U L H A N B Y D Q M
A O S T A N D A R D S T A T E S U U M O G
F O S N H O O Q R Q W F L P E H X K T P U
A K M B P B E S T Q C C S D C D G G T R K

Clues

  • An example of an endothermic reaction. (think of plants). (14)
  • What are: a pressure of 100 kPa, a stated temperature 298 K or (25 degrees celsius) and a concentration of 1.0 mol per dm cubed classed as ? (8, 10)
  • What is a diagram showing alternate routes between reactants and products which allows the indirect determintation of an enthalpy change from other known enthalpy changes using Hess' law. (8, 5)
  • What is the average enthalpy change that takes place when breaking by homolytic fission 1 mol of a given bond in the molecule of a given species. (7, 4, 8)
  • What is the enthalpy change that accompanies a reaction in the molar quantities expressed in a chemical equation under standard conditions, all reactants and products being in their standard states. (7)
  • What is the enthalpy change that takes place when breaking by homolytic fission 1 mol of a given bond in the molecules of a gaseous species. (4, 8)
  • What is the heat content that is stored in a chemical system ? (8)
  • What is the minimum energy required to start a reaction by the breaking of bonds. (10, 6)
  • What is the name of a reaction whereby the enthalpy of the products is smaller than the enthalpy of the reactants ? (this causes heat to be lost to its surroundings). (10)
  • What is the physical state of a substance under the standard conditions of 100 kPa (1 atmosphere) and 298 K (25 degrees celsius). (8, 5)

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all Enthalpy resources »