Unit 1

• 1

• 2

• 3

• 4

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• Oxygen

• Nitrogen

• Hydrogen

• Sulfur

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This picture represents which of the following?

• element

• compound

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• It contains only one type of atom

• It is made up of two different elements

• It is a mixture of gases

• It is a metal

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• There are four carbon atoms

• There are four hydrogen atoms

• There are four molecules

• There are four compounds

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• Physical separation

• Chemical reaction

• Filtration

• Evaporation

• It is made of only one atom

• It is made of atoms chemically bonded together

• It is a mixture of atoms

• It is a type of metal

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• It is found in nature

• It contains more than one type of atom

• It is a gas

• It is colorless

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• Both are elements

• Both are compounds made of more than one element

• Both are metals

• Both are solids at room temperature

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• Its color

• Its chemical formula

• Its taste

• Its shape

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