Unit 5&6 Test Review
Flashcard
•
Chemistry
•
9th - 12th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What makes a molecule polar?
Back
A molecule is polar when there are different types of elements bonded to the central atom, causing an unequal sharing of electrons.
2.
FLASHCARD QUESTION
Front
What is the molecular shape of BCl3?
Back
The molecular shape of BCl3 is trigonal planar.
3.
FLASHCARD QUESTION
Front
Which molecule has a linear shape?
Back
CO2 has a linear shape.
4.
FLASHCARD QUESTION
Front
Why is a bent molecular shape polar?
Back
A bent molecular shape is polar because there are lone pairs on the central atom, leading to an uneven distribution of charge.
5.
FLASHCARD QUESTION
Front
What is the correct Lewis structure for water?
Back
The correct Lewis structure for water is represented by option C.
6.
FLASHCARD QUESTION
Front
Define a trigonal planar molecular shape.
Back
A trigonal planar molecular shape occurs when a central atom is bonded to three other atoms, all in the same plane, with bond angles of 120 degrees.
7.
FLASHCARD QUESTION
Front
What is the significance of lone pairs in molecular geometry?
Back
Lone pairs can affect the shape of a molecule by repelling bonded pairs, leading to different molecular geometries.
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