CHM 1045 EXAM PACKAGE DEAL WITH COMPLETE SOLUTIONS GRADED A+

Acetate - C2H3O2- Ammonium - NH4+ Carbonate - CO32- Define a cation - An atom that loses an electron becomes a positively charged ion Define a covalent bond - A chemical bond formed by the sharing of a pair of electrons between atoms. Define a covalent compound - Composed of two or more nonmet...

Anions are - negative (ie, more electrons) Cations are - positive (ie, less electrions) Formula for density - d = m/v Formula Mass is measured by - adding up all the elements g/mol Formulas to conv. Celsius to Fahrenheit - 1. F = (C x 9/5) +32 2. C = (F +32) x 5/9 Formulas to conv. Kelvin to C...

accuracy - how close a measurement is to a true or accepted value acid - proton donor Acid Naming Rules - 1. Add O, add "per" prefix. 2. Subtract 1 O, ending in "ous". 3. Subtract 2 O's, add "hypo" prefix with "ous" suffix. acid-base titration - a solution of a known concentration (sta...

(CO3)2- - carbonate ion (NO3)- - nitrate (PO4)3- - phosphate ion (SO3)2- - sulfite ion (SO4)2- - sulfate ion 1 Cal = ? cal - 1000 cal 1 cal = ? J - 4.18 J 1 ft = ? in - 12 in 1 gal = ? qt - 4 qt 1 in = ? cm - 2.54 cm 1 lb = ? g - 454 g 1 lb = ? oz - 16 oz 1 mi = ? ft - 5280 ft1 qt = ? L ...

1 lb = _______ kg - 0.454 5 steps of creating a Lewis structure - 1. calculate total number of valence electrons available 2. determine which will be the central atom 3. arrange atoms symmetrically around the central atom 4. place bonds/electrons around the atoms until the octet rule is satisfie...

___ are forms of matter - Substances ____ _____ provides information about percentages of different isotopes of each element - Mass spectrometer ____ + ____ are polar covalent molecules that dissociate into ions when introduced to water - Acids, bases _____ charge = # of protons > # electron...

4 concepts of Dalton's atomic theory and their correctness - 1. All matter is composed of indivisible particles (atoms) (can split atoms but this is generally correct) 2. atoms and indestructible and unchangeable (can change with extraneous outside methods, but still true) 3. all atoms of a giv...

Exp 2- 25.00 mL of an unknow liquid were measured three times. The mass of each of the 25.00 mL samples were 36.137, 36.241, 36.098 g. Calculate the density of each sample and average value of the density. - 1.) 36.137 g/ 25.00 mL= 1.445 g/mL 2.) 36.241 g/ 25.00 mL= 1.450 g/mL 3.) 36.098 g/ 25.0...