chemistry
Guide: Chemistry 2045. Exam 1 Ch. 1-6Chapter 1: Keys to the study of Chemistry· Chemistry: The study of matter and its properties, the changes that matter undergoes, and the energy associated with those changes.· Matter: Anything that has mass and volume, inertia, and energy(the ability to do work)· Properties: the characteristics that give each substance its unique identity. They can be 1.Physical (characteristic shown by themselves, without changing or interacting with another substance) A physical change leads to a different form of the same substance (same composition)· Intensive (independent of amount of material, ex. Density) · Extensive(depend on amount of material, ex volume)· 2.Chemical-how some material reacts in the presence of other. A chemical reaction occurs when a substance (or substances) is converted into a different substance. A chemical change leads to a different substance (different composition) (see attached 1.1)· Liquid conforms a container shape, but to the extent of the liquids own volume· Gas conforms container shape, but fills entire container.· Potential Energy- Energy due to position.
· Kinetic Energy- Energy due to the motion of the object· Total Energy: Potential + Kinetic· Energy is an extensive property1. Alternate Proccess:Given: the masses of two reactants. · Percent yield: the actual yield presented as a percent% yield = actual yield * 100% ------------------ Theoretical yield· Overall percent yield- In multistep reaction sequences, the percent yields of the steps are expressed as fractions and multiplied together to find the overall percent yield. (become positively charged) · Anions- non-metal atoms after they gain the electrons lost by the metal ion. (NOT a PS) a mixture retains many of the properties of its components. (PS)· Molecule - independent structural unit consisting of two or more atoms that are chemically bound together. · Monatomic ions - A cation or anion derived from a single atom. moles of solute per mL of solutionMOLE-MASS-NUMBER CONVERSIONS INVOLVING SOLUTIONSMolarity can be tought of as a conversion factor to convert between volume of solution and amount of solute. Chapter 4: The Major Classes of Chemical Reactions4. · What can an individual atom do?· Lose one or more electrons· Capture one or more electrons· "hold hands" with one or more atoms· IONIC COMPOUNDS· Form when a metal reacts with a non-metal.
Common topics in this essay:
Guide Chemistry,
PS- Type,
PERCENT YIELDS,
SI Units,
Introduction Bonding,
WATER Water's,
IONIC COMPOUNDS,
Atomic Symbol,
PRECISE TOOL,
Amount Substance-mole-mol,
atomic mass,
chemical reactions,
compounds ·,
ionic compounds,
atom ·,
· law,
compound ·,
· tin =,
tin =,
limiting reactant,
· tin,
dilution * volume,
lower actual value,
* volume dilution,
values lower actual,
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