Chemicals of life Flashcards
Describe the basic structure of atom
Electrons-
neurons neutral
protons +
Basic structure of elements
Can’t be broken, Hydrogen Carbon nitrogen
Explain the meaning of chemical formula
Expresses the chemical composition of a molecule or compound
Compare and contrast molecular formula and structural formula
Molecular formula: expresses both composition of a single molecule and composition of a compound
Structural formula: is a diagram that both indicates the composition and number of atoms are linked together
Ionic bonds
Receive or loose electrons
Covalent bonds
Share electrons
Difference between nonpolar covelent bonds , polar covelent bonds, hydrogen bonds
NC: commonly found between the same type atoms between C-H
Hydrophobic
PC: unequal sharing of electrons between two atoms make polar molecule
HB: weak attractive force between a slightly positive area slightly negative area of polar molecule
Difference between inorganic and organic substances
IC: One may have carbon or hydrogen
OC: always contain carbon and hydrogen
Location of water in the body
Plasma ,lymph , intracellular, extracellular fluid, interstitial fluid ,
Transcellular
Compare and contrast electrolytes and none electrolytes
Electrolytes: can be dissolved and they can conduct electrical current
No electrolytes: can dissolve and conduct nothing
Compare and contrast electrolytes and none electrolytes
Electrolytes: can be dissolved and they can conduct electrical current
No electrolytes: can dissolve and conduct nothing
What is the relationship between acids bases and ph?
They are ionic bonds positively charges
Why are salts important
Supply essential ions for our body
Difference Carbohydrate ,lipids ,
Proteins , nucleic acids
CH: formed carbon hydrogen and oxygen
Lipids: Fatty cells Fat Triglycerides , steroids carbon rings, phospholipids
Proteins: large complex molecule amino acids
Nucleic acid:human body largest molecule
Two types of nucleic acids occur in cells like
DNA: deoxyribonucleic
RNA ribonucleic
