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

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

Clues

  • a solution of a known concentration. Standard solutions are normally used in titrations to determine unknown information about another substance. (8, 8)
  • The actual number of atoms of each element in a molecule. (9, 7)
  • 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 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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