Chemistry Final Exam

How does the density of water change with increasing pressure?

• increases

• decreases

• stays the same

• depends on temperature

In which state (solid, liquid, gas) does water have the lowest density?

• solid

• liquid

• gas

• depends on temperature

How does the density of water compare to the density of ethanol?

• water is denser

• ethanol is denser

• they have the same density

• depends on temperature

What factor has the greatest influence on the density of water?

• Temperature

• Pressure

• Salinity

• Atmospheric Composition

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

How many protons are in carbon?

• 12

• 6

• 0

• 7

Tags

NGSS.MS-PS1-1

An atom of carbon has 6 protons and 7 neutrons in its nucleus. If the atom is neutral, how many electrons does it have?

• 0

• 7

• 6

• 13

What type of bond is formed when atoms share electrons?

• Covalent

• Ionic

• Hydrogen

• Polyatomic

How are ionic and covalent bonds alike?

• They both form organic molecules.

• They both fill outer electron shells.

• They both transfer electrons from one atom to another.

• They both transfer protons from one atom to another.

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NGSS.HS-PS1-1

NGSS.HS-PS1-3

Carbon has 4 valence electrons which means

• it can only form bonds with carbon

• it is stable

• it can make ionic bonds

• it wants to make 4 covalent bonds

Tags

NGSS.HS-PS1-1

An atom of neon has 8 valence electrons. What will an atom of neon MOST likely do to be stable?

• Gain 1 electron

• Lose 2 electrons

• Lose 8 electrons

• Neither gain nor lose any valence electrons