CHEMACTIVITY 23 CRITICAL THINKING QUESTIONS

The phase labels given describe whether the compound dissolves or not. What is the density of the tin? NCl3 nitrogen trichloride c. What is the sum of the bonding electrons and nonbonding electrons for each of the central atoms in Figure 1? Describe what happens to the ions in solid sodium hydroxide NaOH during the process of dissolving in water. Based on the dipole moments for HF, HCl, HBr, HI, Table 1, which is more important in the determination of a dipole moment—the bond length distance or the electronegativity difference? Does your measurement in CTQ 1 agree with this?

Explaining concepts to other members of your group not only helps in their understanding, it broadens your understanding. Complete the table below. Predict what will happen if these molecules are allowed to stand at room temperature for a long time. In many cases, the charge of an ion can be predicted by considering the electronegativity of the atom and its electron configuration. Domains of electrons around a central atom will orient themselves to minimize the electron-electron repulsion between the domains. Use the vector notation see Figure 2 above to designate the dipole moments of: We will examine these results and attempt to propose a model for the structure of atoms based on these data.

In terms of intermolecular forces, why does the boiling point of a particular type of compound for example, an alkane increase as the molecular weight increases? Regardless, choices must be made about which topics thunking and are not important, and about the depth to which selected topics are investigated. The magnitude of the magnetic moment measured in magnetons is related to but not proportional to the number of unpaired electrons present.

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Make a model of transbutene with a modeling kit. Element Magnetic Moment magnetons H Paramagnetic 1.

chemactivity 23 critical thinking questions

Write the Lewis structure for SiCl4. The measureddipole moment for HF is 1. What is the difference between intramolecular bonds and intermolecular forces?

Theelements with AVEEs in the range of 1. What happens to electrolytes when they dissolve in water? Shell Model I questiond, estimate the ionization energy for Br.

Chemistry a Guided Inquiry

Considering your answers to CTQs 3 and 4, how is the size of one Celsius degree related to the size of one Kelvin? Which of the following are metallic?

chemactivity 23 critical thinking questions

Compare the values of the partial charges on the carbon atom in methane and on the carbon atom in tetrafluoromethane.

Consider Model 1 of ChemActivity 21 concerning the equilibrium of cisbutene and trans-2 butene.

General, Organic, and Biological Chemistry: A Guided Inquiry

If the pH of a cola drink is 3. Would eating ice be a good way to lose weight? Consider the series Cl2, Br2, I2. Thinkong atom will eject only one electron, but every electron in each atom has an approximately equal chance of being ejected. Diagram of a Be atom using the shell model a and the core charge concept b.

What is the N—O bond order? Diagram of a Ne atom using the shell model a and the core charge concept b. Information When comparing the energy level of two different electrons, the electron with the higher ionization energy is said thinkingg occupy the lower energy level. Critical Thinking Questions 5. Which spheres represent the sodium ions and which spheres represent the chloride ions the anion formed from the chlorine atom?

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This class will help me in future classes, because I have gained good study skills. What is the mass in grams of 4. Describe the relative height of the peaks in the photoelectron spectrum of a sample of this hypothetical atom.

chemactivity 23 critical thinking questions

Formal charges are assigned to atoms in molecules according to a set of rules. Five common molecular shapes.

General, Organic, and Biological Chemistry: A Guided Inquiry – PDF Free Download

This more sophisticated model, known as the quantum mechanical model, retains most of the general features that we have deduced for atomic structure. During the time interval 0—1 s, what fraction of the A molecules react? We cannot create more precision just by changing to the English system, so we should round off to three sig figs. But we will stick to the most common ones. If you measure out From your experience, list some properties qusetions nonmetals.

How many valence electrons are in the NO—2 ion?