We will review the human population growth activity, and we will discuss community ecology that centers upon the symbiotic relationships such as parasitism, commensalism, mutualism, predation as well as the main characteristics of community ecology such as competitive exculsion, intraspecific and interspecific competition, species richness, species evenness, species-area effect, disturbances, stability, primary and secondary succession, and climax community.
Subsections of 18.3 & 18.4: pH, Neutralization, & Buffers
We will review the properties of acids and bases, and then we will explain the meaning and importance of pH of matter. Moreover, we will elaborate upon the neutralization process between acids and bases, and briefly introduce the concept buffer as it plays a major role in chemical reactions.
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Section 19.3: Human Population Growth
We will review our lab activity on “Counting Populations”, then we will discuss how agricultural development changed our human population growth over time. We will also compare the observed patterns of population growth in developed countries like U.S., Japan, Germany, and France as compared to the developing countries like China and India.
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Reinforcement: Acids & Bases
We will discuss what happens to a substance such as ammonia that is dissolved in water in terms of its forward and reverse reactions and identify the conjugate acid, conjugate base, and the two conjugate acid-base pairs. Moreover, we will elaborate briefly upon the Lewis Model by defining an anhydride and give examples upon it and distinguish between those that produce an acid and those that produce a base. Furthermore, we will reinforce the characteristics or properties of acids and bases by a comparative study along with the models that we have discussed. This reinforcement will be turned in as a formative assessment.
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Activity: Measuring Population Size
Students will work in pairs to apply the method of sampling to determine the size of a population to a practical situation that involves the ladybird beetles.
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Section 18.1: Introduction to Acids and Bases
Students will learn how to identify an acid from a base using the physical and chemical properties of acids and bases. Moreover, students will learn about the classification of solutions in terms of being acidic, basic, or neutral. Furthermore, students will briefly touch upon the Arrhenius and Bronsted Models as well as review and elaborate briefly upon the Lewis Model.
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Measuring Populations
Students will complete their reinforcement activity on measuring populations and if time permits, students will work in pairs to apply the method of determining the size of a population to a practical situation that involves the ladybird beetles.
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Solvation, Solubility, and Acid Rain
Students will review and reinforce their work on solvation and solubility from yesterday. Then we will discuss the societal issue: Acid Rain. We will examine the causes and effects of acid rain on lakes, specifically those that are vulnerable to acid rain in the State of Minnesota, and comment about the pH of rain and acid rain in general.
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Measuring Populations
We will review the main characteristics of populations and discuss and reinforce how populations are measured as we focus upon the exponential and logistic models. Furthermore, we will examine the limiting factors that control population size, understand how populations fluctuate, and determine the perils of small populations.
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Reinforcement: Solvation and Solubility
Students will reinforce the topic on solvation and solubility by analyzing the main concepts and ideas that we have discussed and elaborated upon in class. If time permits, students will read about one of our social issues that centers on acid rain and elaborate on its significance in our environment.
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