Structure of an Atom

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What is an Element ?
A substance made from only one type of atom
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What is a compound ?
2 or more elements chemically bonded
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What is a mixture ?
2 or more substance that have not reacted chemically together
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What is the difference between a mixture and a compound ?
The a mixture is not chemically bonded and a compound is
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What is an atom ?
The smallest particle of a chemical element that can exist.
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How can we separate a solid from liquid ?
Filtiration -separating an insoluble liquid from a solid
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How can we separate salt from water ?
Heat / Evaporate the water to leave behind the salt
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What process separates inks ?
Chromatography
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What gas is formed when group 1 metals react with water ?
Hydrogen
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What do you call bromine atoms that have a different number of neutrons ?
Bromine isotopes
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What is an e number used for ?
Codes for substances that are allowed to be used as food additives
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How are the elements arranged in the modern periodic table ?
In horizontal lines and used the patterns to predict properties of the elements
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How did Mendeleev organize his element ?
In order of atomic number
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Other cards in this set

Card 2

Front

What is a compound ?

Back

2 or more elements chemically bonded

Card 3

Front

What is a mixture ?

Back

Preview of the front of card 3

Card 4

Front

What is the difference between a mixture and a compound ?

Back

Preview of the front of card 4

Card 5

Front

What is an atom ?

Back

Preview of the front of card 5
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