Chemistry Final Review

Isotope – Atoms of the same element with different numbers of neutrons
Chemical reaction rate – Measures change in concentration with time of an entity
What is relative atomic mass based on? – Relative atomic mass used on a comparison of the mass with 12C isotope
Law of multiple proportions – When two elements combine in different ways to form different substances, the mass ratios are small, whole-number multiples of one another
Spectroscope – An instrument hat uses prism to break up light into its various components, you see a number of lines of various colors
POLAR or NON-POLAR?

carbon dioxide – NON-POLAR

(MLS ONLY) An adult diabetic with renal complications has the following results:
sodium: 133 mEq/L (133 mmol/L)
glucose: 487 mg/dL (26.8 mmol/L)
BUN: 84 mg/dL (30.0 mmol/L)
creatinine: 5 mg/dL (442.0 (jmol/L)
On the basis of these results, the calculated serum osmolality is.
a 266 mOsm/kg
b 290 mOsm/kg
c 323 mOsm/kg
d 709 mOsm/kg – c 323 mOsm/kg
Energy storage in animals? – Glycogen
extensive – dependent on amount of sample (mass, volume)
mass number – what on the periodic table indicates the total number of protons and neutrons?
Why can metals conduct electricity? – Delocalised electrons within it's structure can move easily.
radiation – Energy in the form of photons
Recrystallization – Used to clean solids:
Solid dissolved in small among of hot solvent and filtered to remove solid impurities.
Solution then cooled in ice water where crystals are formed. Purified crystals then collected by filtration.
extensive – dependent on amount of sample (mass, volume)
resonance structures – Alternative Lewis structures that can be drawn for a species and differ in the location of bonding pairs vs lone pairs

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