Exam 1 Flashcards
What are ions?
Atoms that have gained or losss a valence electrons
What are covalent bonds?
Shares at least one pair of electrons
What are ionic bonds?
One electrons takes away from another electrons.
Ionic bonds don’t share
What does OILRIG mean
An atom that gains an electron is reduced
An atom that losesman
Oxidation is Loss
Reduction is Gain
What does OILRIG mean
An atom that gains an electron is reduced
An atom that losesman
Oxidation is Loss
Reduction is Gain
What is a bond?
A force of attraction between atoms or ions
Thus it is energy
Where is energy in ATP held?
In the high energy bonds between phosphate groups
What does it mean when something has a high phosphate group?
It means that they are unstable and can be easily broken
This is good because it makes it easier to release energy
Why is water polar?
The atoms are negatively difference
Hydrogen atoms are partial positive charge
Oxygen atoms are partial negative charge
What bonds are intermolecular and intramolecular?
Hydrogen bonds are intermolecular within 2 molecules of water
Oxygen bonds are intramolecular within 1 molecule of water
What are characteristics of water?
High specific heat
High heat of vaporization
Capillary action: allows water to be moved up through plants
What is the difference between hydrophobic and hydropholic?
Hydrophobic does not dissolve in water and hydropholic dissolves in water
What is an acid?
A substrate that can donate protons
What is a base?
A substance that can accept protons
What is dehydration synthesis?
The formation of a larger molecule with the release of water molecules
What’ is hydrolysis
The break down of a chemical bond in the presence of water
What are the elements of life
CHONP
CARBON
HYDROGEN
OXYGEN
NITROGEN
PHOSPHORUS
WHAT ARE FUNCTIONS OPF CARBOHYDRATES?
Source of cellular fuel(glucose)
Structural molecules
Monsahacride