Chemistry: Elements and Compounds

They study what all things in the universe that we can see are made of

• physicists

• biologists

• geologists

• chemists

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Everything in the universe that we can observe is made of these

• molecules
• elements

• energy
• cells

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What element is needed for strong bones?

• Iron
• Vitamin C
• Potassium
• Calcium

A table listing all the elements

• Periodic table of elements

• Chart of elements
• List of elements
• Table of contents

Element with the chemical symbol O

• nitrogen
• hydrogen
• carbon
• oxygen

A combination of different elements joined together

• blend
• fusion
• mixture
• compound

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Symbols that show the elements and number of atoms that make up a compound

• chemical formulas
• elemental equations
• atomic symbols
• molecular structures

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Chemical formula for water

• H3O
• H2O
• HO
• O2H

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Small particles that make up elements

• atoms
• protons
• cells
• molecules

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Two or more atoms fastened together

• ion
• compound
• molecule
• element

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