chemical bonds
What is an ionic bond?
a bond that has given or taken electron(s). An electrical attraction
What is synthesis?
Building a larger molecule from smaller ones
What is atomic number?
the numbers of protons in an atom.
If the pH number is below 7, it is ________, if the pH number is above 7, it its _________.
acidic; basic
if you gain an electron, you have a more _______ (positive/negative) charge. if you lose an electron, you have a more _________ (positive/negative) charge.
negative; positive
What is an anion and a cation
a negatively charged ion is an anion, a positively charged ion is a cation
What is decomposition?
Breaking down larger molecules into smaller ones
What is atomic weight/mass?
the number of protons + number of neutrons
What is a buffer
a substance that stabilizes pH. HCO3 (bicarbonate) is the most important buffer!!!
If a substance is hydrophilic, then it is _________ (polar/nonpolar). If a substance is hydrophobic, then it is ________ (polar/nonpolar).
Hydrophilic=polar; hydrophobic=nonpolar
what is a hydrogen bond
a bond formed between a partially positive charged hydrogen ion of a water molecule and a partially negatively charged ion of a water molecule
Anabolism is the ________ (breaking down/building up) of a substance, while Catabolism is the _______ (breaking down/building up) of a substance.
building up; breaking down (catastrophe!)
What is an isotope?
Is water acidic or basic?
Trick question!!! It's neutral, because it has a pH of 7!
What is the most important and abundant ELEMENT in the body to total body weight?
Oxygen!
What is a polar and a non polar bond
a polar bond is an unequal sharing of electrons, while nonpolar bonds have an equal sharing of electrons
What is the role of an enzyme, and its most important characteristics?
An enzyme is a catalyst and a protein which lowers the activation energy for chemical reactions to take place.
What is the most important inorganic MOLECULE in the body?
Water!!!
If something has a high conentration of hydroxides, then it is _________.
basic
What is the difference between an organic and inorganic compound?
An organic compound has both hydrogen and carbon, while an inorganic compound has either hydrogen or carbon but never both!
what is a prime example of a polar and hydrogen bond
there is a polar bond between oxygen and hydrogen in a water molecule, and there is a hydrogen bond between water molecules.
Dehydration synthesis builds a _____ (smaller, larger) molecule by _____(removing, adding) water
Larger, removing
If an atom with an atomic weight of 12, it has 6 neutrons, how many protons and how many electrons does it have?
3 protons and 3 electrons
The higher the H+ concentration, the __________ the PH
Lower (more acidic!)
When is Dr. Kassan's review session
Fridays from 3-5 pm