Check for Understanding - Intramolecular Forces

Why do covalent compounds have lower melting and boiling points compared to ionic compounds?

• Covalent compounds have weak intermolecular forces between the molecules

• Covalent compounds do not conduct electricity

• Covalent compounds have strong intermolecular forces between the molecules

• Covalent compounds have very weak bonds between the atoms

Why are ionic compounds soluble in water?

• They form between nonmetals, are nonpolar and so water is repelled and dissolves them

• They form between nonmetals, are polar and so water is attracted and dissolves them

• They form between a metal and a nonmetal, are polar and so water is attracted and dissolves them

• They form between a metal and a nonmetal, are polar and so water is repelled and dissolves them

Tags

NGSS.HS-PS1-3

The structure of salt is shown. Salt would be considered...

• an ionic compound because it between a metal and nonmetal

• an ionic compound because it is between nonmetals

• a covalent compound because it is between a metal and nonmetal

• a covalent compound because it is between nonmetals

Tags

NGSS.HS-PS1-3

The structure of sugar is shown. Sugar would be considered...

• an ionic compound because it between a metal and nonmetal

• an ionic compound because it is between nonmetals

• a covalent compound because it is between a metal and nonmetal

• a covalent compound because it is between nonmetals

Tags

NGSS.HS-PS1-1

An experiment was conducted using salt, sugar, and two unknown substances. The results from the experiment are shown. What type of intramolecular forces would be found in substance A?

• Ionic because it's properties are most like salt (which is ionic)

• Ionic because it's properties are most like sugar (which is ionic)

• Covalent because it's properties are most like salt (which is covalent)

• Covalent because it's properties are most like sugar (which is covalent)

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

NGSS.HS-PS1-3

An experiment was conducted using salt, sugar, and two unknown substances. The results from the experiment are shown. What type of intramolecular forces would be found in substance B?

• Ionic because it's properties are most like salt (which is ionic)

• Ionic because it's properties are most like sugar (which is ionic)

• Covalent because it's properties are most like salt (which is covalent)

• Covalent because it's properties are most like sugar (which is covalent)

Tags

NGSS.HS-PS1-3

HCl and C2H4O2 are dissolved in water and hooked up to a conductivity tester as shown in the picture.

Based of this experiment, what type of bonds for HCl?

• Ionic because it can conduct electricity and light the bulb

• Covalent because it can conduct electricity and light the bulb

• Ionic because it cannot conduct electricity and the bulb did not light up

• Covalent because it cannot conduct electricity and the bulb did not light up

Tags

NGSS.HS-PS1-3

NGSS.HS-PS2-5

HCl and C2H4O2 are dissolved in water and hooked up to a conductivity tester as shown in the picture.

Based of this experiment, what type of bonds for C2H4O2?

• Ionic because it can conduct electricity and light the bulb

• Covalent because it can conduct electricity and light the bulb

• Ionic because it cannot conduct electricity and the bulb did not light up

• Covalent because it cannot conduct electricity and the bulb did not light up

Tags

NGSS.HS-PS1-1