Homework Exercises

With what four aspects of matter is the science of chemistry concerned  

How do chemical properties of matter differ from physical properties Give two examples of each. 

Which of the following represent physical properties and which represent chemical properties  

What is meant in chemistry by the term physical change Give some examples of physical changes. 

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Students go on to investigate rates of corrodibility and the reactivity series is introduced. Methods to prevent rusting are considered in a homework exercise and further opportunities to study the methods of rust prevention are provided in two optional lessons. 

Forgetting to use prefixes is a common mistake that students make in the midst of an exam. Make sure you indicate the appropriate stereochemistry in your nomenclature, especially if your instructor takes time to indicate the specific stereochemistry of a compound. Again, get into the habit of doing this when you re working on homework exercises. 

A.s a homework exercise, repeal part (e) for the second-order reaction given in part tb). 

Based on client readiness to proceed to more difficult situations, the social worker continues the steps in the hierarchy. Each successive step is addressed until the client is able to complete the task at or below the contracted level of anxiety. The entire sequence of events is completed primarily through homework exercise and is typically completed in six to eight individual sessions. 

In CBT it is important to look for evidence of specific examples of faulty thinking as early as possible in the assessment process, which can be used later on in the assessment to illustrate the cognitive model. A number of techniques can be used by both the therapist and patient to explore and elicit unhelpful cognitions and behaviours (Blackburn and Davidson 1990 Kirk 2000). Blackburn and Davidson (1990) describe a number of techniques commonly used. The first one involves self-monitoring of thoughts and behaviours by the patient as part of a homework exercise. A diary can be used to establish the baseline of specific unhelpful thoughts, feelings and behaviours and the frequency, intensity, severity and duration of these. 

Another useful technique for eliciting underlying EMS is known as the satellite technique . The patient is asked to identify five important things about their past. The therapist and the patient then work together to identify one theme common to all five things identified. This can also be used as a homework exercise and if the patient doesn t come back with a central theme it can form the basis for the next therapy session. An example of this is illustrated in Figure 14.1. 

Equation 4.15 is a second-order partial differential equation. When treating diffusion phenomena with Pick s second law, the typical aim is to solve this equation to yield solutions for the concentration profile of species i as a function of time and space [Ci(x,f)]- By plotting these solutions at a series of times, one can then watch how a diffusion process progresses with time. Solution of Pick s second law requires the specification of a number of boundary and initial conditions. The complexity of the solutions depends on these boundary and initial conditions. Por very complex transient diffusion problems, numerical solution methods based on finite difference/finite element methods and/or Fourier transform methods are commonly implemented. The subsections that follow provide a number of examples of solutions to Pick s second law starting with an extremely simple example and progressing to increasingly more complex situations. The homework exercises provide further opportunities to apply Pick s Second Law to several interesting real world examples. 

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