C2.3 HOW MUCH?

  • Created by: 12dalel
  • Created on: 22-11-16 16:09
What is an isotope?
Atoms of the same atom with a different number of neutrons
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What is the relative mass of a neutron or proton?
1
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Whats the relative mass of an electron?
Very small
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What is a mole of a substance?
One mole of any substance is it's relative formula mass in grams
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How do you work out the relative formula mass of a substance?
By adding up all the individual's relative masses in the proportions given
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How do you work out the percentage of an element in a compound?
Mass of individual element / total mass of compound x 100 = %
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What do balanced symbol equations tell us about chemical reactions?
How many moles of substances are involed
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Card 2

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What is the relative mass of a neutron or proton?

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1

Card 3

Front

Whats the relative mass of an electron?

Back

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Card 4

Front

What is a mole of a substance?

Back

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Card 5

Front

How do you work out the relative formula mass of a substance?

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