The Basics of Chemistry

Which one of the following is the most common element found in the body?

• Oxygen

• Carbon

• Hydrogen

• Nitrogen

What is two or more atoms held together by chemical bonds?

• adenosine triphosphate (ATP)

• carbon

• molecule

• compound

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NGSS.HS-PS1-4

Which element is present in all life forms?

• adenosine triphosphate (ATP)

• carbon

• molecule

• compound

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NGSS.HS-LS1-6

Adenosine triphosphate (ATP) is a form of _____________ energy.

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NGSS.HS-LS1-7

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Muscle contraction is a form of _____________ energy.

Which of the following is (are) true concerning energy?

• Energy has mass and takes up space.

• Energy can be kinetic and move matter.

• Chemical energy is potential energy stored in chemical bonds.

• Mechanical energy is indirectly involved in moving matter.

• Radiant energy directly involves electromagnetic waves.

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NGSS.HS-PS1-4

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Important functions of water include which of the following?

• Provides cushioning

• Acts as a transport medium

• Participates in chemical reactions

• Acts as a solvent for sugars, salts, and other solutes

• Reduces temperature fluctuations

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NGSS.HS-ESS2-5

Acidic substances include which of the following?

• Blood

• Water

• Gastric juice

• Egg white

• Lye

Nerve impulses involve the flow of an electrical current, a type of energy known as _____________ energy.

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NGSS.HS-PS3-2

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Which of the following is (are) a subatomic particle associated with an atom?

• neutron

• electron

• proton

• ion

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