Water Properties
Flashcard
•
Biology
•
9th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the main property of water that allows it to dissolve ionic compounds?
Back
Water is a polar solvent, meaning it has a partial positive charge on one end (hydrogens) and a partial negative charge on the other end (oxygen), which allows it to interact with and separate ionic compounds.
2.
FLASHCARD QUESTION
Front
What is surface tension in water caused by?
Back
Surface tension in water is caused by hydrogen bonds between water molecules, leading to cohesion that allows some insects, like water striders, to skate on its surface.
3.
FLASHCARD QUESTION
Front
Which part of a water molecule is positively charged?
Back
The hydrogen atoms in a water molecule are positively charged.
4.
FLASHCARD QUESTION
Front
What does it mean for a molecule to be polar?
Back
A polar molecule has a distribution of electrical charge that leads to a molecule having a positive end and a negative end.
5.
FLASHCARD QUESTION
Front
What type of bond forms between a slightly positive hydrogen atom and a negatively charged atom?
Back
This bond is called a hydrogen bond.
6.
FLASHCARD QUESTION
Front
Why can't water dissolve nonpolar compounds?
Back
Nonpolar compounds do not have charged regions, so they do not interact favorably with the polar water molecules.
7.
FLASHCARD QUESTION
Front
What is cohesion in the context of water?
Back
Cohesion refers to the attraction between water molecules due to hydrogen bonding, which contributes to surface tension.
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