Atoms and Reactions - Part 1, As, Unit 1, Module 1

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

Clues

  • a solution of a known concentration. Standard solutions are normally used in titrations to determine unknown information about another substance. (8, 8)
  • The amount of solute, in mol, dissolved per 1 dm3 of solution. (13)
  • The mass of an atom of an isotope compared with one-twelfth of the mean mass of an atom of carbon-12. (8, 8, 4)
  • the molar relationship between the relative quantities of substance taking part in the reaction. (13)
  • The number of protons in the nucleus of an atom. (6, 6)
  • THe quantity whose unit is the mole. Chemists use 'amount of substance' as a means of counting atoms. (6, 2, 9)
  • The simplest whole-number ratio of atoms of each element present in a compound. (9, 7)
  • The volume per mole os a gas. The units of molar volume are dm3 mol-1. At room temperature and pressure, the molar volume is approximately 24.0dm3mol-1. (5, 6)
  • The weighted mean mass of a formula unit compared with one-twelfth of the mass of an atom of carbon-12. (8, 7, 4)
  • The weighted mean mass of an atom of an element compared with one-twelfth of the mass oof an atom of carbon-12 (8, 6, 4)

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