An element is a substance made up from one type of atom.
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Compound
When the atoms of two or more elements chemically join together they form a new substance called a compound.
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Isotopes
Isotopes is the same element with the same atomic number but different mass number, It has the same number of protons but a different number of neutrons.
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Mass number
number of protons + number of neutrons.
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What is a group?
Name given to the columns of the periodic table
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What is a period?
The name given to the rows in the periodic table
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Covalent compound
Made up from non-metal molecules
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Ionic compound
Made up from metal and non- metal molecules consisting of ions with have a charge.
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Rf value
Rf value= distance moved by substance ÷ distance moved by solvent front
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Other cards in this set
Card 2
Front
Compound
Back
When the atoms of two or more elements chemically join together they form a new substance called a compound.
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