Ch.3 - Chemical ReactionsWorksheetSee all chapters
All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds
Additional Problems
Write a chemical formula for each molecular model. (See Appendix IIA for color codes.)
Write a chemical formula for each molecular model. (See Appendix IIA for color codes.)
Write a chemical formula for each molecular model. (See Appendix IIA for color codes.)
Write a chemical formula for each molecular model. (See Appendix IIA for color codes.)
Write a chemical formula for each molecular model. (See Appendix IIA for color codes.)
Glycine, an amino acid used by organisms to make proteins, is represented by the molecular model below. Write its molecular formula.
Different representations of the methane (CH4) molecule. Structural formulas, perspective drawings, ball-and-stick models, and space-filling models. Which model, the ball-and-stick or the space-filling, more effectively shows the angles between bonds around a central atom?
Ball-and-stick representations of benzene, a colorless liquid often used in organic chemistry reactions, and acetylene, a gas used as a fuel for high-temperature welding, are shown below. Determine the molecular formula of each.
The ionic substance strontium oxide, SrO, forms from the direct reaction of strontium metal with molecular oxygen. The arrangement of the ions in solid SrO is analogous to that in solid NaCl and is shown here. In the figure, do the large spheres represent Sr2+ ions or O2- ions?
When molecules are represented by molecular models, what does each sphere represent? How big is the nucleus of an atom in comparison to the sphere used to represent an atom in a molecular model?
The following diagram represents the collection of elements formed by a decomposition reaction. If the blue spheres represent N atoms and the red ones represent O atoms, what was the empirical formula of the original compound?
Write the molecular and structural formulas for the compounds represented by the molecular models in the figure .Write the molecular formula for the compound (a).
Write the molecular and structural formulas for the compounds represented by the molecular models in the figure .Write the molecular formula for the compound (b).
Write the molecular and structural formulas for the compounds represented by the molecular models in the figure .Write the molecular formula for the compound (c).
Write the molecular and structural formulas for the compounds represented by the molecular models in the figure .Write the molecular formula for the compound (d).
Write the molecular and structural formulas for the compounds represented by the molecular models in the figure .Write the structural formula for the compound (a).
Write the molecular and structural formulas for the compounds represented by the molecular models in the figure .Write the structural formula for the compound (b).
Write the molecular and structural formulas for the compounds represented by the molecular models in the figure .Write the structural formula for the compound (c).
Write the molecular and structural formulas for the compounds represented by the molecular models in the figure .Write the structural formula for the compound (d).
What are the different ways to represent compounds?
Write a chemical formula for each of the following molecular models. (See Appendix II.A in the textbook for color codes.)
The following diagram represents the collection of CO2 and H2O molecules formed by complete combustion of a hydrocarbon. What is the empirical formula of the hydrocarbon?
Ionic, covalent, and metallic bonds. The three different substances shown here are held together by different types of chemical bonds.If the white powder were sugar, C12H22O11, how would we have to change this picture?
Consider a reaction represented by the shown spheres: Which sphere represents a metal and which a nonmetal?
The following diagramrepresents an ionic compound in which the red spheres (six spheres with vertical stripes in the middle row) represent cations and blue spheres (12 spheres with six in the top row and six in the bottom row) represent anions.Which of the following formulas is consistent with the drawing: KBr, K2SO4, Ca (NO3) 2, Fe2 (SO4) 3?
Methane reacts with oxygen in a Bunsen burner. In the molecular level views shown in the figure how many C, H, and O atoms are present as reactants?
Methane reacts with oxygen in a Bunsen burner. Are the same number of each type of atom present as products?
Write a structural formula for water.
Throughout this textbook, we use space-filling molecular models to represent molecules. Which number is the best estimate for the scaling factor used in these models? In other words, by approximately what number would you have to multiply the radius of an actual oxygen atom to get the radius of the sphere used to represent the oxygen atom in the water molecule shown.
What are the different ways to represent compounds? Check all that apply.a. a ball and stick modelb. a molecular formulac. a cylindric modeld. a ball modele. the Kolbe formulaf. a space-filling modelg. an empirical formulah. a structural formula
Write a chemical formula for each molecular model. (See Appendix IIA for color codes.) 
Write a ratio showing the relationship between the amounts of each element for each compound: 
Write a ratio showing the relationship between the amounts of each element for each compound:
Write a ratio showing the relationship between the amounts of each element for each compound:
Write the molecular and structural formulas for the compound represented by the following molecular model:
Write the molecular and structural formulas for the compound represented by the following molecular model:
Write the molecular and structural formulas for the compound represented by the following molecular model:
Write the molecular and structural formulas for the compound represented by the following molecular model:
Write the molecular and structural formula for the compound represented by the following model:
Name each of the following compounds:
Write the molecular and structural formula for the compound represented by the following model:
Name each of the following compounds:
Write the molecular and structural formula for the compound represented by the following model:
Write the molecular and structural formula for the compound represented by the following model:
Elements X (green) and Y (purple) react according to the following equation: X 2 + 3Y2 ⟶2XY3. Which molecular scenerepresents the product of the reaction?
Gaseous dichlorine monoxide decomposes readily to chlorine (green) and oxygen (red) gases.(a) Which scene best depicts the product mixture after the decomposition?
Write the molecular and structural formulas for the compounds represented by the models in the figure.Write the molecular formula for the compound (a).
Write the molecular and structural formulas for the compounds represented by the models in the figure.Write the structural formula for the compound (a).
Write the molecular and structural formulas for the compounds represented by the models in the figure.Write the molecular formula for the compound (b).
Write the molecular and structural formulas for the compounds represented by the models in the figure.Write the molecular formula for the compound (c).
Write the molecular and structural formulas for the compounds represented by the models in the figure.Write the molecular formula for the compound (d).
Write the molecular and structural formulas for the compounds represented by the models in the figure.Write the structural formula for the compound (b).
Write the molecular and structural formulas for the compounds represented by the models in the figure.Write the structural formula for the compound (c).
Write the molecular and structural formulas for the compounds represented by the models in the figure.Write the structural formula for the compound (d), assuming that all bonds are single bonds.
Tetracarbon dioxide is an unstable oxide of carbon with the following molecular structure:What are the molecular and empirical formulas of this substance?
Calculate the molar mass of the following compound.
Calculate the molar mass of the following compound.
Calculate the molar mass of the following compound.
Enter a chemical formula for the following molecular model. (See Appendix II.A in the textbook for color codes.)
Enter a chemical formula for the following molecular model. (See Appendix II.A in the textbook for color codes.)
Enter a chemical formula for the following molecular model. (See Appendix II.A in the textbook for color codes.)
Give the empirical formula for each of the compounds represented below.
Molecular models. The white, black, and red spheres represent atoms of hydrogen, carbon, and oxygen, respectively.Which molecule has the most carbon atoms?How many carbon atoms are there in that molecule?
From the molecular structures shown here, identify the one that corresponds to each of the following species. (a) chlorine gas(b) propane(c) nitrate ion(d) sulfur trioxide(e) methyl chloride, CH3Cl
Write the chemical formula for the compound shown.
Name the compound.
The following diagramrepresents an ionic compound in which the red spheres (six spheres with vertical stripes in the middle row) represent cations and blue spheres (12 spheres with six in the top row and six in the bottom row) represent anions.Which of the following formulas is consistent with the drawing? KBr, K2SO4, Ca(NO3)2, Fe2(SO4)3.Name the compound from the above consistent with the drawing.
In the molecule shown here, the different colored spheres represent different types of atoms. Write a molecular formula for this molecule