Basic Chemistry Timberlake 2014 Guaranteed Pass

Timberlake Basic Chemistry 2014 Study Guide | Updated for Current Exam Liter (L) - answer - Metric measurement of volume Meter (m) - answer - Metric and SI measurement of length Cubic meter (m^3) - answer - SI measurement of Volume Gram (g) - answer - Metric measurement of mass True - answer - T or F: A zero at the end of a decimal # is a significant figure. Ex. 50.0 L True - answer - T or F: A zero is not significant if it is at the beginning of a decimal #. Ex. 0.075 1000 - answer - Numerical value for kilo 0.001 - answer - Numerical value for milli D=mass/volume - answer - Formula for density (D) Pure substance - answer - This type of matter cannot be separated by a physical process, has a fixed or definite composition, elements and compounds Mixture - answer - Type of matter with a variable composition; can be separted by physical process; either homogeneous or heterogeneous. F=1.8 (C) + 32 - answer - Formula to convert from Celsius to Fahrenheit C= F-32/1.8 - answer - Formula to convert from Fahrenheit to Celsius K = C + 273 - answer - Formula to convert from Celsius to Kelvins Potential energy - answer - the energy that matter possesses because of its location or chemical composition. ex. foods and fossil fuels Kinetic energy - answer - This is energy of motion, anything in motion has KE. ex. digest food, burn gasoline 4.184 J - answer - 1 calorie = ? Joule Specific Heat - answer - Amount of heat needed to raise the temp. of 1 g of substance by 1 degree C. heat = mass x temp. change x SH (cal/j C) - answer - Formula to find specific heat. Mass=heat/change in temp x specific heat - answer - Formula to calculate mass using specific heat. equal - answer - In a calorimeter, the amount of heat transferred from the object is ____ to the heat that was gained by the water. alkali metals - answer - Name of group 1A. They are soft, shiny metals, good conductors, with low melting points. alkaline earth metals - answer - Group 2A: shiny metals, but not as reactive as Group 1A. halogens - answer - Group 7A: strongly reactive and form compounds with most of the elements. metalloids - answer - Used as semiconductors because they can function as both conductors or insulators. atomic number - answer - Number of protons in an atom; found on periodic table. Proton, neutron, electron - answer - List subatomic particles by mass, highest to lowest. mass number - answer - Number of protons + number of neutrons = protons - answer - In all atoms the number of electrons is equal to the number of: Isotopes - answer - Atoms with different numbers of neutrons in their nuclei. atomic mass - answer - Weighted average mass of all the naturally occurring isotopes. atomic number - answer - In a nuclear symbol, this is listed on the bottom (it's equal to the number of protons in the atom). mass number - answer - In a nuclear symbol, this is listed on the top (total number of neutrons & protons in an atom). 2(n)^2 - answer - Formula to find max. # of electrons in an energy level. Group number - answer - Number of valence electrons in an atom can be determined by this on the periodic table. Atomic mass - answer - To calculate this, multiply the mass of each isotope by its % abundance and adding the results. ionization energy - answer - The energy needed to remove the least tightly bound electron from the valence shell. homogeneous mixture - answer - of the same kind; uniform in composition throughout; also called a solution (air) heterozygous mixture - answer - a mixture that is not uniform in composition; oil and water filtration - answer - the process that separates a solid from the liquid in a heterogeneous mixture chromatography - answer - the process of seperating a chemical mixture into its individual substances solid - answer - of definite shape and volume; strong attractive forces liquid - answer - matter that has a definite volume but no definite shape; particles sufficiently attracted to each other gas -