Questions and Answers
Which of the following is the correct name for Na3PO4?
What is the charge on the iron Ion in Fe2O3?
3+
Which one of the following is an extensive property?
What is an extensive property?
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Gases and liquids share the property of?
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What is the name of Au(NO3)3?
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Who is the scientist whose experiment involving scattering of alpha-particles by gold foil led him to conclude that the nucleus of an atom contains a dense center of positive charge?
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What is easily separated into its components by simple techniques such as filtering or decanting?
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Which one of the following has the element name and symbol correctly matched?
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Why are cathode rays deflected away from a negatively charged plate?
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Which one of the following is most likely to lose electrons when forming an ion?
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Element X must be from Group __________ of the Periodic Table of Elements.
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An isotope of gold, 197Au has ___ protons, ___ neutrons, and ___ electrons.
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Elements of Group 1 are called __________.
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Which of the following is most likely to be an ionic compound?
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Use the information to identify the atom or ion: 8 protons, 8 neutrons, and 10 electrons.
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What is the formula of the ionic compound formed between strontium and nitrogen?
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How many significant figures are in 0.0322?
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Which one of the following is the highest temperature?
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A sample of copper weighs 6.93 g. How many moles of copper atoms are there?
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How many sig figs should be retained for 12.00000 x 0.9893 + 13.00335 x 0.0107?
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Theobromine is a compound found in cocoa. What is the percentage of nitrogen found?
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How many hydrogen atoms are in 0.1488 g of H3PO4?
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A fish tank holds 1.029 yd^3 of water. What is this volume in cubic meters?
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Which of the following ionic compounds is insoluble in water?
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What is the oxidation state of gold in Au(CN)4?
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Beer's law can be used to determine?
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As you increase the temperature of a solute, its solubility?
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Chemical reactions that absorb heat energy are called ___ and have a ___ enthalpy.
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The quantity of product that is calculated to form when all of the limiting reagent reacts is called the?
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Water condensing from gas to liquid droplets on a glass of cold juice is?
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Molar heat capacity has a unit of?
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Which of the following is soluble in water at 25 C?
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When an aqueous solution of ___ are mixed, a precipitate forms?
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The first law of thermodynamics gives only the change on energy, delta E for the process.
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Mixing a solution of CaCl2 with a solution of LiF will form?
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Acetic acid, CH3CO2H is an example of what?
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Which hydroxides are weak bases?
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A compound is found to contain 63.52% Fe and 36.48% S. Find its empirical formula.
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What is a neutralization reaction?
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Oxidation cannot occur without?
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Acids can turn blue litmus paper?
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What are spectator ions?
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Sea water contains roughly 28.0 g of NaCl per liter. What is the molarity of sodium chloride in sea water?
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Which of the following has the smallest size?
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For a principal quantum number n, how many electrons are possible?
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The total number of orbitals in n=3 is?
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Which of the following compounds has both ionic and covalent bonds?
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No two electrons in the same atom can have the same set of four quantum numbers.
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What wavelength corresponds to the lowest energy?
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How many radial nodes does a 4s orbital have?
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The ion with the smallest diameter is?
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Which of the following sources produces the highest energy photons?
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What is the ability of an atom to attract electrons when the atom is in a compound?
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In which of the following atoms is the 3s orbital closest to the nucleus?
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The Heisenberg principle states that?
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An electron moving from orbital n=5 to n=2 will _____ energy during the transition.
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A molecule with a single covalent bond is?
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Which of the following compounds does not follow the octet rule?
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What is the electron configuration of Cr?
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What is the electron pair geometry of B in BF3?
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Between which two elements is the difference in metallic character the greatest?
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Which has the highest electronegativity?
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Give the relation between Hz and second.
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An electron in an atom is in the n=4 and l=2 quantum level, the ml values are?
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The total number of electrons that can occupy 5f orbitals is?
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Sp3 hybridization involves the hybridization of how many atomic orbitals?
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The noble gas configuration for Co2+ ion is?
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What does it mean to be paramagnetic?
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What does it mean to be diamagnetic?
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Study Notes
Chemical Compounds and Properties
- Na3PO4 is named trisodium phosphate.
- The charge of iron in Fe2O3 is +3.
- An extensive property depends on the amount of matter, with mass being an example.
- Gases and liquids have an indefinite shape.
- Au(NO3)3 is known as Gold (III) Nitrate.
- Heterogeneous mixtures can be separated by filtering or decanting.
Atomic Structure and Ions
- Earnest Rutherford concluded the atom has a dense center of positive charge through alpha-particle scattering experiments.
- An isotope of gold, 197Au, has 79 protons, 118 neutrons, and 79 electrons.
- O2- represents an atom or ion with 8 protons, 8 neutrons, and 10 electrons.
Group and Compound Properties
- Elements of Group 1 are referred to as alkali metals.
- Na2O is most likely an ionic compound.
- Aluminum reacts with nonmetals from Group 16.
Chemical Reactions and Thermodynamics
- Mixing NaBr and AgNO3 results in a precipitate.
- Endothermic reactions absorb heat energy and have a positive enthalpy.
- Water condensing from gas to liquid droplets is an exothermic process.
- The theoretical yield indicates the maximum amount of product from a reaction.
Solutions, Concentrations, and Molarity
- Sea water has a molarity of sodium chloride of approximately 0.479 moles.
- A fish tank with 1.029 yd³ of water is equivalent to 0.7881 m³.
Acids, Bases, and Reaction Types
- A neutralization reaction occurs between an acid and a base.
- Spectator ions are those that do not participate in a chemical reaction.
- Acids can turn blue litmus paper to pink, indicating their acidic nature.
Periodic Trends and Atomic Theory
- Ga3+ has the smallest ionic size among Cl-, Br-, Ga3+, and K+.
- Electronegativity assesses an atom's ability to attract electrons; fluorine (F) has the highest electronegativity.
- The Heisenberg uncertainty principle states that both the position and momentum of an electron cannot be accurately determined at the same time.
Quantum Mechanics and Electron Configurations
- The total number of orbitals in n=3 is 9, and a 4s orbital has 3 radial nodes.
- The noble gas configuration for Co2+ is [Ar] 3d7.
- An electron in n=5 to n=2 transitions releases energy.
Molecular Geometry and Hybridization
- Molecules like BF3 do not follow the octet rule, while structures like Cl2 feature a single covalent bond.
- The electron pair geometry for boron in BF3 is trigonal planar.
- sp3 hybridization involves mixing four atomic orbitals.
Additional Chemistry Concepts
- Molar heat capacity is expressed as J/mol·°C.
- Metals usually lose electrons; chromium (Cr) is most likely to do so among the given elements.
- The relation between Hertz and seconds is defined as 1 Hz = 1 s⁻¹.
Summary of Significant Compounds and Elements
- Acetic acid (CH3CO2H) is classified as a weak acid.
- BaSO4 is an ionic compound that is insoluble in water.
- NH4Cl contains both ionic and covalent bonds due to its composition.
Use these points for quick review and comprehension of key concepts from your CHEM final study materials.
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Prepare for your Chemistry final exam with these flashcards, covering key concepts such as compound names, ion charges, and properties of matter. Enhance your understanding of extensive and intensive properties through practical examples. Perfect for quick revision and self-testing!
