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Chemistry
Chapter 2
Question | Answer |
---|---|
Element | |
Substance | |
Molecule | |
Compound | |
Mixture | |
Law of mass conservation | |
Law of definite (or constant) composition | |
Fraction by mass (mass fraction) (44) | |
Percent by mass (must percent, mass %) (44) | |
Law of multiple proportions | |
atom | |
Cathode ray | |
Nucleus | |
Proton | |
Neutron | |
Electron | |
Atomic number (Z) | |
Mass number (A) | |
Atomic symbol | |
Isotope | |
Atomic mass unit | |
Dalton (Da) | |
Mass spectrometry | |
Isotopic mass | |
Atomic mass | |
Period | |
Group | |
Metal | |
Nonmetal | |
Metalloid (semimetal) | |
Ionic compound | |
Covalent compound | |
Chemical bond | |
Ion | |
Binary ionic compound | |
Cation | |
Anion | |
Monatomic | |
Covalent bond | |
Polyatomic ion | |
Chemical formula | |
Empirical formula | |
Molecular formula | |
Structural formula | |
Formula unit | |
Oxoanion | |
Hydrate | |
Binary covalent compound | |
Molecular mass | |
Formula mass | |
Heterogeneous mixture | |
Homogeneous mixture | |
Solution | |
Aqueous solution | |
Filtration | |
Crystallization | |
Distillation | |
Volatility | |
Extraction | |
Chromatography | |
What are the three key subatomic particles? | Protons, neutrons in electrons by the three key is what? |
What are the factors that influence the strength of ionic bonding? | |
What is a relationship of formed ions with the nearest Noble Gas | |
Which are the metals that form more than one monatomic ion? | Chromium, cobalt, copper, iron, lead, mercury and tin. |
What are the two monatomic ions of chromium? | Chromium II - chromous Chromium III - chromic |
What are the monatomic ions of cobalt? | Cobalt II Cobalt III |
What are the monatomic ions of copper? | Copper I - cuprous Copper II - cupric |
What are the monatomic ions of iron? | Iron II - ferrous Iron III - ferric |
What are the monatomic ions of Lead? | Lead II Lead IV |
What are the monatomic ions of Mercury? | Mercury I - mercurous Mercury II - mercuric |
What are the monatomic ions of Tin? | Tin II - stannous Tin IV - stannic |
Ammonium | NH4+ |
Hydronium | H3O+ |
Acetate | CH3COO- C2H3O2- |
Cyanide | CN- |
Hydroxide | OH- |
Hypochlorite | ClO- |
Chlorite | ClO2- |
Chlorate | ClO3- |
Perchlorate | ClO4- |
Nitrite | NO2- |
Nitrate | NO3- |
Permanganate | MnO4- |
Carbonate | CO32- |
Hydrogen Carbonate/Bicarbonate | HCO3- |
Chromate | CrO42- |
Dichromate | Cr2O72- |
Peroxide | O22- |
Phosphate | PO43- |
Hydrogen Phosphate | HPO42- |
Dihydrogen Phosphate | H2PO4- |
Sulfite | SO32- |
Sulfate | SO42- |
Hydrogen Sulfate/Bisulfate | HSO4- |
What are the first 10 Straight-Chain Alkanes | Methane, Ethane, Propane, Butane, Pentane, Hexane, Heptane, Octane, Nonane, Decane |
Methane | CH4 |
Ethane | C2H6 |
Propane | C3H8 |
Butane | C4H10 |
Pentane | C5H12 |
Hexane | C6H14 |
Heptane | C7H16 |
Octane | C8H18 |
Nonane | C9H20 |
Decane | C10H22 |
What is the key difference between an element and a compound? | An element is one basic unit while a compound is two or more elements chemicaly bonded. |
What are two differences between a compound and a mixture. | A compound's components are chemically bound together while a mixture's are physically combined. A compound can only be separated with chemical change, but a mixture can be separated by physical means. |
Which of the following are pure substances? Calcium Chloride Sulfur Baking Powder (NaHCO3,CaH2PO4-) Cytosine HCNO | A substance has a fixed composition, so Calcium Chloride, Cytosine and Sulfur are pure substances. Baking Powder is a mixture; it is two compounds combined. |
Explain the following statement: The smallest particles unique to an element may be atoms or molecules. | Some elements bond to eachother, and are called diatomic molecules. Each part of the molecule has the same component characteristics. |
Explain the following statement: The smallest particles unique to a compound cannot be atoms. | A compound is by definition two or more atoms of individual elements chemically bound. |