Chemistry Definitions

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

Clues

  • A neutron changes to a proton and an electron. The electron is then emitted. (4, 5)
  • Atoms of the same element, with the same number of protons and electrons but different numbers of neutrons (8)
  • Short wavelength, high energy electromagnetic radiation (5, 5)
  • The actual number of atoms of each element present in a molecule/formula unit of a compound (9, 7)
  • The average mass of one formula unit relative to 1/12th the mass of an atom of C-12 (8, 7, 4)
  • The emission of 2 protons and 2 neutrons (a He nucleus) from an unstable nucleus (5, 5)
  • The mass of an atom compared to 1/12th the mass of an atom of C-12 (8, 8, 4)
  • The number of protons in the nucleus of an atom (6, 6)
  • The simplest whole number ratio of atoms of each element present in a compound (9, 7)
  • The total number of protons plus neutrons in the nucleus of an atom (4, 6)

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