Chemistry Final Exam

An atom of iodine has 7 valence electrons. What will an atom of iodine MOST likely do to be stable?

• Lose 1 electron

• Lost 7 electrons

• Gain 1 electron

• Neither gain nor lose any valence electrons

A substance with a pH of 9 is a

• acid

• base

• neutral

The electrons in the outermost energy level are called

• valence

• ions

• covalent

• farthest out

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

This reaction is showing energy being _____________

• Absorbed

• Released

• There is no change in energy shown

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

A substance with a pH of 8 is a

• acid

• base

• neutral

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-PS1-4

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.MS-PS3-5

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

Tags

NGSS.MS-ESS2-4

Acidic substances include which of the following?

• Blood

• Water

• Gastric juice

• Egg white

• Lye