Have an account?
Skip to Content
Build your own quiz
Chemistry
10th -
12thgrade
Standard Chemistry Lewis Dot Structures Practice
19 questions
Show Answers
See Preview
- 1. Multiple Choice
Which of the following elements are an exception to the octet rule and require less than 8 valence electrons?
H
Li
O
C
- 2. Multiple Choice
How many total electrons in the bonds in the molecule above?
8
4
2
3
- 3. Multiple ChoiceWhich of the following is the correct Lewis dot structure for the molecule fluorine (F2)?ABCD
- 4. Multiple Choice
CCl4 has how many double bonds?
0
1
2
3
- 5. Multiple Choice
What is the correct Lewis Dot Structure for ammonia NH3
- 6. Multiple Choice
Which is the correct Lewis Dot structure for carbon dioxide?
- 7. Multiple Choice
Carbonate (CO32-) has how many double bonds?
0
1
2
3
- 8. Multiple Choice
In HCN (Carbon is usually the central atom) what kind of bond is between the C and N
Single
Double
Triple
- 9. Multiple Choice
molecule in which opposite ends have opposite electric charges because it is not symmetrical
cohesion
polar molecule
hydrogen bond
solution
- 10. Multiple Choicebond created by the weak attraction of a slightly positive hydrogen atom to a slightly negative portion of another moleculepolar moleculesolutionadhesionhydrogen bond
- 11. Multiple Choice
The ability of ice to float in water is because of water's property of _____.
cohesion
high surface tension
density anomaly
high specific heat
- 12. Multiple ChoiceWater's ability to absorb large amounts of energy is known ascohesionadhesionless dense as a solidhigh specific heat
- 13. Multiple ChoiceThe Hydrogen atoms in H2O are positively chargedTrueFalse
- 14. Multiple ChoiceWhich characteristic of water will allow a paperclip to remain floating on water when the paperclip is gently placed on top of the water?adhesionsurface tensionsolvent propertiesnonpolar
- 15. Multiple Choice
Surfactants like soap weaken the surface tension of water. Why?
break the water molecules into hydrogen and oxygen
Disrupts the hydrogen bonds
reduces the density of water
increases the density of water
- 16. Multiple Choice
Water is polar because...
The unequal sharing of electrons gives the water molecule a slight negative charge near its oxygen atom and a slight positive charge near its hydrogen atoms.
The molecule has two poles, at which it is colder than other regions of the molecule.
The unequal sharing of electrons gives the water molecule a slight negative charge near its hydrogen atoms and a slight positive charge near its oxygen atom.
The water molecule is neutral.
- 17. Multiple Choice
Is this molecule symmetrical?
Yes
No
- 18. Multiple Choice
Is this molecule polar or nonpolar?
polar
nonpolar
- 19. Multiple Choice
Which atom will have a partial negative charge because of its electronegativity?
hydrogen
bromine
- Answer choicesTagsAnswer choicesTags