Chemistry Module 3 Definitions

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

Clues

  • A measure of heat energy in a chemical system (atoms, molecule or ions). (8)
  • A redox reaction where the same element has been oxidised and reduced in one reaction. (18)
  • Energy required to break one mole of a specific type of bond in a gaseous molecule. Bond breaking is endothermic and bond making is exothermic as energy is released. (7, 4, 8)
  • Energy required to raise the temperature of 1g of water by 1K. (8, 4, 8)
  • Energy transfer from the surroundings to the system (enter), seen by a positive enthalpy change, decrease in temperature in surroundings as energy moves in. (11)
  • Energy transfer to the surroundings (exiting), seen by a negative enthalpy change, temperature increases as surroundings gain more energy. (10)
  • Involves standard pressure (100kPa), standard temperature (298K), standard concentration (1 mol dm^-3) and standard state (temperature and pressure). (8, 10)
  • Metallic bonding is the strong electrostatic attraction between cations (metal ions) and delocalised electrons. (8, 7)
  • Rate of the forward reaction is equal to the rate of the backward reaction, the concentration of reactant and product do not change and it is in a closed system. (7, 11)
  • The minimum energy required for a reaction to take place. (10, 6)

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