Polar or nonpolar?

Is this molecule polar or non-polar? (a)  

• Non-polar

• Polar

Answer explanation

The molecule is polar because it has an uneven distribution of electron density, resulting in a dipole moment. This occurs when there are differences in electronegativity between atoms, leading to partial positive and negative charges.

Tags

NGSS.HS-PS1-2

Is this molecule polar or non-polar? (a)  

• Polar

• Non-polar

Answer explanation

The molecule is polar because it has an uneven distribution of electron density, resulting in a dipole moment. This occurs when there are differences in electronegativity between atoms, leading to partial positive and negative charges.

Is this molecule polar or non-polar?

• Non-polar

• Polar

Answer explanation

The molecule is non-polar because it has a symmetrical shape and the electronegativities of the atoms are similar, resulting in an even distribution of charge. This lack of charge separation means it does not have polar characteristics.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS2-6

Is this molecule polar or non-polar?

• Non-polar

• Polar

Answer explanation

The molecule is non-polar because it has a symmetrical shape and the electronegativities of the atoms are similar, resulting in an even distribution of charge. This lack of charge separation means it does not have polar characteristics.

Tags

NGSS.HS-PS2-6

This is an example of a __________ bond.

• non-polar covalent

• polar covalent

• ionic

• metallic

Answer explanation

This is an example of a polar covalent bond because it involves the unequal sharing of electrons between atoms, leading to a partial positive charge on one atom and a partial negative charge on the other.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Will this molecule be polar or nonpolar? H₂S

• polar

• nonpolar

Answer explanation

H₂S is polar because it has a bent molecular shape and a significant difference in electronegativity between sulfur and hydrogen, leading to an uneven distribution of charge.

Tags

NGSS.HS-PS2-6

This image shows the electric charge distribution map for H₂S. What does the red region indicate?

• Region of negativity

• Region of positivity

• Neutral region

Answer explanation

The red region in the electric charge distribution map for H2S indicates a region of negativity, signifying an area with a higher electron density compared to other regions.