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Card 6
Front
What is shown when you subtract Z from A?
Back
Card 7
Front
What is an isotope?
Back
Card 8
Front
Is the mass number or the atomic number different in isotopes of the same element?
Back
Card 9
Front
What is the average mass number of an element called?
Back
Card 10
Front
How many particles does 1 mole of a substance contain?
Back
Card 11
Front
6.02 x 10 to the power of 23 mol-1 is known as whose number?
Back
Card 12
Front
What is the equation with units to work out the number of moles?
Back
Card 13
Front
How many moles of sodium oxide are present in 24.8g of Na2O? Na=23 O=16
Back
Card 14
Front
How many electrons can the first energy level hold and what is it called?
Back
Card 15
Front
How many electrons can the second energy level hold and what is it called?
Back
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