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Questions and Answers
What is the theoretical percent composition of hydrogen in CH4?
What is the theoretical percent composition of hydrogen in CH4?
- 75%
- 25% (correct)
- 50%
- 100%
An empirical formula can directly provide the molecular formula.
An empirical formula can directly provide the molecular formula.
False (B)
What is the molar mass of caffeine given the following masses: 49.47 g carbon, 28.85 g nitrogen, 16.48 g oxygen, and 5.20 g hydrogen?
What is the molar mass of caffeine given the following masses: 49.47 g carbon, 28.85 g nitrogen, 16.48 g oxygen, and 5.20 g hydrogen?
194.19 g/mol
The density equation is given by d = mass/_____.
The density equation is given by d = mass/_____.
Match the following elements with their atomic number:
Match the following elements with their atomic number:
What is the atomic number of Carbon (C)?
What is the atomic number of Carbon (C)?
Physical properties change the composition of a substance.
Physical properties change the composition of a substance.
Name one example of a strong acid.
Name one example of a strong acid.
The ______ is the number of protons in an element.
The ______ is the number of protons in an element.
Match the following elements with their classification:
Match the following elements with their classification:
Which of the following compounds is an example of a heterogeneous mixture?
Which of the following compounds is an example of a heterogeneous mixture?
Ions form when atoms gain or lose neutrons.
Ions form when atoms gain or lose neutrons.
What is the mass number of Ni (Nickel) with 30 neutrons?
What is the mass number of Ni (Nickel) with 30 neutrons?
A chemical property that indicates a substance can catch fire is called ______.
A chemical property that indicates a substance can catch fire is called ______.
What are the products of the reaction between lithium hydroxide and carbon dioxide?
What are the products of the reaction between lithium hydroxide and carbon dioxide?
What is the limiting reactant when 2.30 g of Fe reacts with 4.00 g of Cl2 in the formation of FeCl3?
What is the limiting reactant when 2.30 g of Fe reacts with 4.00 g of Cl2 in the formation of FeCl3?
To calculate the percent yield, you divide the actual yield by the _____ yield.
To calculate the percent yield, you divide the actual yield by the _____ yield.
Match the reactants with their corresponding theoretical yields in the reaction with magnesium and oxygen:
Match the reactants with their corresponding theoretical yields in the reaction with magnesium and oxygen:
If the actual yield of FeCl3 is 5.22 g, what is the formula to calculate the percent yield?
If the actual yield of FeCl3 is 5.22 g, what is the formula to calculate the percent yield?
What is the balanced equation for the combustion of propane ($C_3H_8$)?
What is the balanced equation for the combustion of propane ($C_3H_8$)?
All acid-base reactions are classified as neutralization reactions.
All acid-base reactions are classified as neutralization reactions.
What is the net ionic equation for the reaction between NaOH and Fe(NO3)3?
What is the net ionic equation for the reaction between NaOH and Fe(NO3)3?
In the reaction $HOCN(aq) + H_2O(l) ⇌ OCN^−(aq) + H_3O^+(aq)$, HOCN is a ___ and OCN^- is its ___
In the reaction $HOCN(aq) + H_2O(l) ⇌ OCN^−(aq) + H_3O^+(aq)$, HOCN is a ___ and OCN^- is its ___
Which of the following is a strong acid?
Which of the following is a strong acid?
Match each oxidation state with the corresponding element in $SO_2$ and $SO_3$:
Match each oxidation state with the corresponding element in $SO_2$ and $SO_3$:
In a redox reaction, oxidation involves the gain of electrons.
In a redox reaction, oxidation involves the gain of electrons.
What reaction type occurs when two aqueous solutions form a solid?
What reaction type occurs when two aqueous solutions form a solid?
In the reaction $2 K_3PO_4 (aq) + 3 BaCl_2 (aq) → ___ Ba_3(PO_4)_2 (s) + ___ KCl (aq)$, the reaction type is ___
In the reaction $2 K_3PO_4 (aq) + 3 BaCl_2 (aq) → ___ Ba_3(PO_4)_2 (s) + ___ KCl (aq)$, the reaction type is ___
What is the frequency of a diagnostic x-ray with a wavelength of 0.01 nm?
What is the frequency of a diagnostic x-ray with a wavelength of 0.01 nm?
Which option correctly identifies the reducing agent in the reaction Fe2+(aq) + Co(s) → Co2+(aq) + Fe(s)?
Which option correctly identifies the reducing agent in the reaction Fe2+(aq) + Co(s) → Co2+(aq) + Fe(s)?
Which statement is true regarding the electromagnetic spectrum?
Which statement is true regarding the electromagnetic spectrum?
In a wave-particle duality framework of light, what phenomenon best illustrates this concept?
In a wave-particle duality framework of light, what phenomenon best illustrates this concept?
What is the approximate energy of a hypothetical wave with a frequency of 1.0 x 10^15 Hz?
What is the approximate energy of a hypothetical wave with a frequency of 1.0 x 10^15 Hz?
What is produced when lithium hydroxide reacts with carbon dioxide?
What is produced when lithium hydroxide reacts with carbon dioxide?
In the reaction 2LiOH(s) + CO2(g) → Li2CO3(s) + H2O(l), how many moles of CO2 are required for one mole of LiOH?
In the reaction 2LiOH(s) + CO2(g) → Li2CO3(s) + H2O(l), how many moles of CO2 are required for one mole of LiOH?
What is the theoretical yield of MgO if 2.40 g of Mg is the limiting reactant in the reaction with O2?
What is the theoretical yield of MgO if 2.40 g of Mg is the limiting reactant in the reaction with O2?
In the reaction 2 Fe + 3 Cl2 → 2 FeCl3, what is the limiting reactant if we have 2.30 g of Fe and 4.00 g of Cl2?
In the reaction 2 Fe + 3 Cl2 → 2 FeCl3, what is the limiting reactant if we have 2.30 g of Fe and 4.00 g of Cl2?
What is the formula for calculating percent yield in a chemical reaction?
What is the formula for calculating percent yield in a chemical reaction?
How many moles of FeCl3 can be produced from 4.00 g of Cl2 in the reaction 2 Fe + 3 Cl2 → 2 FeCl3?
How many moles of FeCl3 can be produced from 4.00 g of Cl2 in the reaction 2 Fe + 3 Cl2 → 2 FeCl3?
Which of the following correctly describes the limiting reactant in a chemical reaction?
Which of the following correctly describes the limiting reactant in a chemical reaction?
Which of the following is a binary acid?
Which of the following is a binary acid?
What is the chemical formula for nickel(II) phosphate?
What is the chemical formula for nickel(II) phosphate?
Which of the following compounds is a covalent compound?
Which of the following compounds is a covalent compound?
Which of the following represents a transition metal ionic compound?
Which of the following represents a transition metal ionic compound?
How many water molecules are in the formula for barium hydroxide octahydrate?
How many water molecules are in the formula for barium hydroxide octahydrate?
What is the correct name for the compound $CuCl_2$?
What is the correct name for the compound $CuCl_2$?
What is the mass number of the isotope $^{14}C$?
What is the mass number of the isotope $^{14}C$?
Which of the following is an oxyacid?
Which of the following is an oxyacid?
What is the chemical formula for lithium bromide?
What is the chemical formula for lithium bromide?
How many neutrons are present in the isotope $^{13}C$?
How many neutrons are present in the isotope $^{13}C$?
Which of the following is an example of a physical property?
Which of the following is an example of a physical property?
Which of the following correctly defines a homogeneous mixture?
Which of the following correctly defines a homogeneous mixture?
What type of ion do nonmetals typically form?
What type of ion do nonmetals typically form?
What is a characteristic of strong electrolytes?
What is a characteristic of strong electrolytes?
Which of the following is a characteristic of a weak acid?
Which of the following is a characteristic of a weak acid?
Which of the following compounds would dissociate into 3 ions in solution?
Which of the following compounds would dissociate into 3 ions in solution?
What phenomenon occurs when ionic compounds dissolve in water?
What phenomenon occurs when ionic compounds dissolve in water?
In the formation of ions, which statement is accurate?
In the formation of ions, which statement is accurate?
What is the complete ionic equation for the reaction of NaOH and Fe(NO3)3?
What is the complete ionic equation for the reaction of NaOH and Fe(NO3)3?
What type of reaction occurs when 1 C5H12 reacts with 8 O2 to produce CO2 and H2O?
What type of reaction occurs when 1 C5H12 reacts with 8 O2 to produce CO2 and H2O?
Which of the following equations represents a neutralization reaction?
Which of the following equations represents a neutralization reaction?
What is the net ionic equation for NaOH(aq) and Fe(NO3)3(aq)?
What is the net ionic equation for NaOH(aq) and Fe(NO3)3(aq)?
In the reaction 2 K3PO4(aq) + 3 BaCl2(aq), what is the resulting product?
In the reaction 2 K3PO4(aq) + 3 BaCl2(aq), what is the resulting product?
Which reaction type does the equation 2 HCl + 1 K2CO3 → CO2 + H2O + KCl represent?
Which reaction type does the equation 2 HCl + 1 K2CO3 → CO2 + H2O + KCl represent?
What are the oxidation numbers for the elements in SO3?
What are the oxidation numbers for the elements in SO3?
Which of the following compounds acts as a strong electrolyte?
Which of the following compounds acts as a strong electrolyte?
In the reaction HOCN(aq) + H2O(l) ⇌ OCN-(aq) + H3O+(aq), what is the conjugate base?
In the reaction HOCN(aq) + H2O(l) ⇌ OCN-(aq) + H3O+(aq), what is the conjugate base?
What is the oxidation number of sulfur in SO2?
What is the oxidation number of sulfur in SO2?
Flashcards
Formula mass
Formula mass
The sum of the atomic masses of all atoms in a chemical formula.
Percent composition
Percent composition
The percentage by mass of each element in a compound.
Empirical formula
Empirical formula
The simplest whole-number ratio of atoms in a compound.
Molecular formula
Molecular formula
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Dimensional analysis
Dimensional analysis
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Stoichiometry
Stoichiometry
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Limiting Reactant
Limiting Reactant
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Theoretical Yield
Theoretical Yield
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Actual Yield
Actual Yield
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Percent Yield
Percent Yield
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How do you calculate percent yield?
How do you calculate percent yield?
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What is a mole ratio?
What is a mole ratio?
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Atomic Number
Atomic Number
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Mass Number
Mass Number
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Physical Properties
Physical Properties
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Chemical Properties
Chemical Properties
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Element
Element
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Homogeneous Mixture (Solution)
Homogeneous Mixture (Solution)
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Heterogeneous Mixture
Heterogeneous Mixture
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Ion Formation
Ion Formation
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Positive Ions
Positive Ions
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Balancing Chemical Equations
Balancing Chemical Equations
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Criss-Cross Method
Criss-Cross Method
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Complete Ionic Equation
Complete Ionic Equation
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Net Ionic Equation
Net Ionic Equation
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Combustion Reaction
Combustion Reaction
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Double-Replacement Reaction
Double-Replacement Reaction
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Single-Replacement Reaction
Single-Replacement Reaction
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Neutralization Reaction
Neutralization Reaction
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Oxidation Number
Oxidation Number
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What are the steps to solving a Limiting Reactant problem?
What are the steps to solving a Limiting Reactant problem?
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How do you determine the limiting reactant?
How do you determine the limiting reactant?
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What are ions?
What are ions?
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Positive Ions (Cations)
Positive Ions (Cations)
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Negative Ions (Anions)
Negative Ions (Anions)
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What are ionic compounds?
What are ionic compounds?
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Naming Group 1 & 2 ionic compounds
Naming Group 1 & 2 ionic compounds
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Naming Transition Metal Compounds
Naming Transition Metal Compounds
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Naming Covalent Compounds
Naming Covalent Compounds
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What are binary acids?
What are binary acids?
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What are oxyacids?
What are oxyacids?
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What are ionic compound hydrates?
What are ionic compound hydrates?
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What is an isotope?
What is an isotope?
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How to determine mass number, protons, neutrons, and electrons?
How to determine mass number, protons, neutrons, and electrons?
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Electromagnetic Spectrum
Electromagnetic Spectrum
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Wavelength (λ)
Wavelength (λ)
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Frequency (ν)
Frequency (ν)
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Speed of Light Equation
Speed of Light Equation
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Energy Equation
Energy Equation
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Combustion
Combustion
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Acid-Base Conjugate Pairs
Acid-Base Conjugate Pairs
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Study Notes
Honors Chemistry Final Exam Study Guide
-
Atomic Mass and Isotopes
- Average atomic mass is calculated by summing the product of the fractional abundance of each isotope and its mass.
- Fractional abundance is the decimal representation of the percentage abundance.
- Isotope mass and abundance data are essential for calculating average atomic mass.
-
Percent Composition
- Mass percent of an element in a compound is calculated by dividing the mass of the element by the total mass of the compound, then multiplying by 100%.
- Percent composition is crucial in determining the relative amounts of the elements within a chemical compound.
-
Molecular Formula Determination
- Empirical formula is the simplest whole number ratio of atoms in a compound.
- Molecular formula is the actual number of atoms of each element in a molecule.
- To determine molecular formula, first calculate the empirical formula, then find the ratio of molar mass (molecular molar mass) to empirical mass. Multiply the subscripts of the empirical formula by that ratio to obtain the molecular formula.
- Molar mass is critical in calculating the molecular formula.
-
Conversion Factors and Dimensional Analysis
- Used to convert among units, including converting between moles, grams, and number of atoms.
- Avogadro's number is used to convert between moles and numbers of atoms or molecules.
- Dimensional analysis is a systematic approach to unit conversions.
-
The Density equation: Density = mass/volume
- Density is a physical property that relates mass and volume.
-
Chemical Formulas & Nomenclature
- Transition metals use Roman numerals to indicate their charge state.
- Covalent compounds often use prefixes like mono-, di-, tri-, etc., to denote the number of atoms of each element in the molecule.
- Know how to name and write formulas for binary acids, oxyacids, ionic compounds (including hydrates).
- Examples of chemical nomenclature are included in one of the pages.
-
Balancing chemical equations
- Ensure the same number of each atom type is on both sides of the equation
- Balancing equations is essential for stoichiometric calculations.
-
Limiting reactants
- The reactant producing the smallest yield determines the limiting reactant.
- Important for determining the maximum amount of product attainable in a chemical reaction.
-
Types of Chemical Reactions
- Classify reactions as combustion, double replacement, single replacement, neutralization, decomposition, or redox.
- Understanding reaction types assists in predicting products.
-
Solutions: Dissolving a solute in a solvent.
- Types of solutions: homogeneous or heterogeneous (mixing varies).
- Understanding solutions enables insights and interpretations of various phenomena.
-
Electromagnetic Spectrum
- Includes various types of waves like x-rays, gamma rays, visible light, radio waves, and ultraviolet.
- Differences lie in frequency, energy, and wavelength - Different types of waves possess specific properties.
-
Atomic Structure
- Bohr's Model - Electrons orbit the nucleus at specific energy levels.
- Orbitals - Regions of space where electrons are likely to be found described by their shapes (s, p, d, f).
-
Electron Configuration
- Use the Aufbau principle, Hund's rule, and the Pauli exclusion principle to arrange electrons in energy levels.
-
Periodic Trends
- Understand trends in atomic radii, ionization energy, electron affinity, and electronegativity across the periodic table and explain why they occur.
- Trends in properties are correlated to patterns in electron arrangement.
-
Physical and Chemical Properties
- Recognize and define physical (e.g., boiling point, color) and chemical (e.g., reactivity) properties of matter.
- Understanding properties allows for identification and classification of materials.
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Description
Test your knowledge of basic chemistry concepts with this quiz, which covers topics such as percent composition, empirical formulas, molar mass calculations, and atomic numbers. Perfect for students looking to reinforce their understanding of physical and chemical properties.
