Structure of Water 1
What is the chemical structure of water?
H2O (or drawing of H2O)
What characteristic of water allows it to dissolve many things?
Because it's a polar compound
What is a solvent?
A substance that dissolves another substance (e.g. water)
An acid has a pH ranging from what to what?
0-6
If water will not dissolve a particular substance, what is it?
How many hydrogen atoms are in a water molecule?
There are 2 hydrogen atoms.
Why is water considered polar?
It has uneven charges (positive hydrogens, negative oxygens).
What is a solute?
Something that gets dissolved in a solvent (solution).
A base has a pH ranging from what to what?
8-14
What property of water is responsible for water flowing up a plants' xylem?
Cohesion
How many oxygen atoms does a water molecule have?
It has one oxygen molecule.
What bonds hold together the oxygen and hydrogens inside the water molecule?
Covalent bonds
Hydrophobic
water fearing (will not dissolve in water)
Neutral is what pH?
Double Jeopardy: What are the two ways to have a neutral pH?
7
Double Jeopardy: Equal amounts of both ions or very few ions.
What property of water allows aquatic habitats to survive in the winter?
Expansion upon freezing or High Specific Heat
What is the charge on the oxygen in a water molecule?
What is the charge on the hydrogens in a water molecule?
Negative charge (oxygen)
Positive charge (hydrogen)
What bonds are inside one water molecules?
Polar Covalent Bonds
What is the mixture that is formed when one substance dissolves another?
Solution
An acid has more ___ ions while a base has more ____ ions.
H+(H3O+) and OH-
What property of water allows nutrients to be dissolved into our blood and transported around our body?
Solubility
(universal solvent)
Hydrogen Bonds
Water disassociates or "breaks down" into what ions?
Double Jeopardy: What are ions?
H+ (H3O+) and OH- ions
Hydrogen (Hydronium) and Hydroxide
Double Jeopardy: a charged atom (different electrons)
Hydrophilic
Double Jeopardy: What substances/chemical bonded compounds are hydrophilic?
Water loving (will dissolve in water)
Double Jeopardy: ionic and polar
What is a buffer?
A weak acid or base that neutralizes strong acids or bases. Keeps pH regulated.
This property of water makes it hard to keep up and keeps Earth's and our body temperatures stable.
Specific Heat Capacity