MES 3: Matter & Energy: Water, pH, Reactions, Thermodynamics, & Enzymes Flashcards
How is H3O+ formed?
A water molecule gained a hydrogen ion from another water molecule
What is the name for H3O+?
Hydronium ion
What is the name for OH-?
Hydroxide ion
What does this equation represent? H2O + H2O H3O+ + OH-
The dissociation of water
What is the charge on a hydronium ion?
1+
What is the charge on a hydroxide ion?
1-
In a neutral solution, the concentration of hydrogen ions is (less than, equal to, or greater than) the concentration of hydroxide ions?
Equal
The unequal sharing of electrons within a water molecule makes the water molecule what?
Polar
The tendency of an atom to pull electrons toward itself is referred to as its what?
Electronegativity
In an H2O molecule, what type of bond is found between the oxygen and hydrogens?
Polar covalent bonds
In an acidic solution, the concentration of hydrogen ions is (less than, equal to, or greater than) the concentration of hydroxide ions?
Greater than
In a basic solution, the concentration of hydrogen ions is (less than, equal to, or greater than) the concentration of hydroxide ions?
Less than
How would we describe a solution with a pH level of 6?
Acidic
What type of solution is lemon juice?
Acidic
How would we describe a solution with a pH level of 7?
Neutral
How would we describe a solution with a pH level of 12?
Basic
What type of solution is pure water?
Neutral
What type of solution is liquid soap?
Basic
What type of bonds between water molecules lead to water’s cohesion?
Hydrogen
A solution of pH 5 has how many times more hydrogen ions and than that of pure water?
100
A space station orbiting earth is exhibiting what type of energy?
Kinetic energy
What does the phrase “conservation of energy” imply?
Energy can neither be created nor destroyed but can be converted from one form to another.
Chemical energy is a form of what type of energy?
Potential energy
In your body, what process converts the chemical energy found in glucose into the chemical energy found in ATP?
Cellular respiration