atoms revision

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

Clues

  • ... are not part of the nucleus (9)
  • ... are smaller than atoms (7)
  • atoms are bigger than ... (8)
  • electrons have a ... charge (8)
  • Nucleon is a collective name for two ..., the neutron and proton (9)
  • protons and neutrons are part of the ... (7)
  • protons have a ... charge (8)
  • Subatomic particles are found inside ... (5)

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