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Helium and Gold atoms are (same or different).
elements
Compounds
atoms
different
Elements
element
Compounds
mixture
_____________________ cannot be separated into simpler substance by physical or chemical means.
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atoms
different
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element
Compounds
mixture
The two or more substances in a ___________________ keep their individual properties.
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mixture
Pure substance composed of two or more different elements joined by chemical bonds.
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atoms
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Compounds
mixture
A ___________________ contains two or more different substances that are only physically joined together, not chemically - they can be separated.
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mixture
________________ can only be separated by chemical means, not physically.
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atoms
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mixture
A ___________________ contains just one type of atom.
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atoms
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mixture
The smallest particle of an element that has the properties of that element is called an ____________.
elements
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atoms
different
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