Water and Solutions Flashcards
What are the properties of water?
Efficiently stores heat
Bonds to itself and other substances
Dissolves many substances
Why is it important that water stores heat?
Many organisms let off heat through water vapor.
Humans sweat, and the internal heat is taken out with it.
What is cohesion?
An attraction between substances of the same kind.
What is adhesion?
An attraction between different substances.
What does cohesion do for/with water?
Allows water to attract itself and other liquids to form drops or thin films.
What prevents the surface of water from breaking or stretching easily?
Linked Hydrogen bonds (see Nature of matter deck), known as surface tension.
What does adhesion do for/with water?
It allows stuff to get wet.
HOW does adhesion work with water?
The strong polar-hydrogen atom in H2O is able to attract less strong negative-polar atoms, forming links with different atoms.
What is a solution?
A mixture where one or more substances are evenly distributed in another substance.
What allows water to dissolve other substances?
Polarity
Which substances dissolve best in water?
Ionic bonds and polar molecules
Explain how polarity helps water dissolve other substances.
When surround by polar molecules(water), ions are attracted to molecules of opposite charge
What is the result when a water molecule (H2O) breaks?
You are left with a positive Hydrogen and a negative Oxygen-Hydrogen
What are compounds that, when dissolved in water, form more positive hydrogen ions?
Acids
What are compounds that, when dissolved in water, form more negative hydrogen-oxygen ions?
Bases
