Is the molecule polar?
Grade 10 Science Worksheet - Building Confidence
NameDate
Circle the best answer, or write your answer on the line.
HCl's dipole moment is 1.093 D and CO's is 0.112 D (NIST). How much larger is HCl's, to 0.01 D, Esme?
On the card, why is CO₂ nonpolar, Jun?
- Its arrows point opposite ways
- It has no oxygen
- Its bonds aren't polar
On the card, why is H₂O polar, Kira?
Use the picture in question 2.
- Its O–H bonds share electrons evenly
- It is a straight line
- It is bent, so they don't cancel
On the card, which way do the arrows point, Luz?
Use the picture in question 2.
- Toward oxygen
- Toward carbon
- Toward hydrogen
What makes a bond polar, Milo?
- Even sharing of the electrons
- Uneven sharing of electrons
- A double bond
CO₂ has polar C=O bonds. Is the molecule polar, Noah?
- Yes: oxygen pulls hard
- No: the bonds cancel
- Yes: polar bonds make it polar
Why is CH₄ nonpolar, Pia?
- Its bonds are even and symmetric
- It is an ion
- It has two lone pairs on its carbon
Which molecule is polar, Ren?
- CO₂
- O₂
- H₂O
Why is O₂ nonpolar, Tala?
- Both atoms pull equally
- Oxygen pulls harder
- It is bent
Is NH₃ polar or nonpolar, Zee?
- Neither
- Polar
- Nonpolar