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Chem Exam 1
Chapters 1-3
| Question | Answer |
|---|---|
| Chemistry | Study of composition, properties, interaction of matter |
| Laws | summery of experimental observations |
| Theories | Comprehensive testable explanations that can be modified with new details |
| Macroscopic Domain | Everyday things that are large enough to be sensed by sight or touch |
| Microscopic Domain | Too small to be seen without microscope |
| Symbolic Domain | Language used to represent components of Macro/Microscopic Domains |
| Mass | Measured amount of matter |
| Weight | force gravity exerts on objects |
| Plasma | Gaseous state of matter containing charged particle |
| Law of Conservation of Matter | matter not created or destroyed, |
| atom | smallest particle of element with its properties |
| Molecule | Two or more atoms together |
| Heterogeneous mixture | composition varies in mixture (Italian dressing) |
| Homogeneous mixture | uniform composition (Powerade) |
| Physical Change | change is state or properties of matter |
| Chemical Change | products have 1+ different types of matter than reactants |
| Chemical change Examples | Rust, burning, food cooked |
| Extensive Property | property depends on amount of matter present , Mass and Volume |
| Extensive Property Example | Gallon has bigger volume and mass than cup |
| Intensive Property | property of sample does not depend on amount present |
| Intensive property example | Gallon of water and cup of water at 20 degrees are both equally 20 degrees |
| Metal | Solid |
| Metalloid | Liquid |
| Nonmetal | Gas |
| Accuracy | how close measurement to true value |
| Precision | How close set of measurements are to each other |
| What is the purpose of neutrons | Stabilize the nucleus and act as a buffer |
| Law of Definite Proportions | different samples of pure chemical compounds always contain the same proportions by mass |
| Law of Multiple Proportions | Elements combine in different ways to form compounds with mass ratios that one small number multiples of each |
| Alkali Metals | Group 1 |
| Alkaline Earth Metals | Group 2 |
| Halogens | Group 7A/17 |
| Noble Gases | Group 8A/18 |
| Macroscopic World | Mass |
| Microscopic World | Atoms and Molecules |
| Elementary Substances | composed of identical particles made of free/bonded atoms |
| Polyatomic Ions are Molecular if | bonded with hydrogen |
| Organic Compound | Hydrogen and Carbon containing compounds |
| Alkanes | single bonds |
| Alkenes | double bonds |
| Alkynes | Triple Bonds |
| Ionic Nomenclature | metal + nonmetal add ide to nonmental |
| Molar Mass | mass of 1 mole of atoms in grams |
| Molecular Formula | "X" times EF Mass |
| Concentration | amount of solute present in given quantity solution |
| Molarity Formula | moles solute/ Liters Solution (L or mL) |
| Dilution | add solvent (water) |
| Dilution Formula | M1V1=M2V2 |
| Density Formula | mass/volume |
| Volume Formula | mass/density |
| Mass Formula | volume*density |
| Binary Molecular Compounds Prefixes | Mono, Di, Tri, Tetra, Penta, Hexa, Hepta, Octa, Nona, Deca |
| Prefix K | Kilo 10^3 |
| Prefix c | Centi 10^-2 |
| Prefix ยต | micro 10^-6 |
| Prefix d | deci 10^-1 |
| Prefix m | milli 10^-3 |
| Prefix n | nano 10^-9 |
| 7 fundamental units of measurement | Mass, temp, time, length, volume, electrical current, luminous intensity candela |
| 3 types of compounds | Ionic, Molecular/covalent, organic/C-H |
| Practice naming BaCl2 | Barium Chloride |
| Practice naming LiNo3 | Lithium Nitrate |
| Practice naming FeCl2 | Iron(II) Chloride |
| Practice naming PbS2 | Lead(IV) Sulfide |
| Organic Compounds Prefixes | Math, Eth, Prop, But |
Created by:
brkolstoe
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