2 - Atomic Theory, Elements, Molecules

What is a molecule

• group of atoms bonded together,

• another word for atom

• a mixture of elements

• smallest fundamental unit of a chemical compound

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NGSS.MS-PS1-1

An Ion is an atom that has

• to many or to few protons to be stable

• to many or to few electrons to be stable

• to many or to few molecules to be stable

• to many or to few neutrons to be stable

Match the following

• a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound

• Molecule

• composed of one or more pure substances in varying composition

• Compound

• a substance that cannot be broken down by any non-nuclear reaction

• Mixture

• a thing that is composed of two or more separate elements, a mixture.

• Atom

• the basic unit of a chemical element

• element

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NGSS.MS-PS1-1

what period is potassium (K) in?

• 2

• 4

• 3

• 1

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NGSS.MS-PS1-1

What type of elements form covalent bonds?

• Metals

• Non Metals

• Metalloids

• Nobel Gas

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When a covalent bond forms _______________ are shared.

• protons

• nutrons

• valence electrons

• quarks

Compounds have _________________ properties, compared to the elements that form them.

• similar

• different

A ___________________ is the smallest unit of a compound.

• atom

• proton

• electron

• molecule

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NGSS.MS-PS1-1

How many valence electrons does Oxygen (O) have?

• 6

• 8

• 15

• 16

How many atoms of hydrogen are in a sugar molecule with the formula C₆H₁₂O₆

• 12

• 6

• 24

• 18

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NGSS.MS-PS1-1