Chemistry: Challenges And Solutions
Catching up on Chemistry: Challenges And Solutions?
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27:00Thermodynamics- the study of how and why energy moves- governs what can happen in a chemical reaction. By applying thermodynamics, chemists can measure and control the heat and energy of chemical reactions to solve problems.
27:00Molecules form when individual atoms create bonds by sharing electrons. Understanding how atoms combine to make molecules allows scientists to predict many of the physical and chemical properties of substances.
29:00As scientists discovered more and more chemical elements, they began developing systems to organise the elements by their chemical properties, leading to the modern periodic table.
28:00In this unit, we will follow the gradual change from considering the atom as a single indivisible particle to a later understanding of the atom composed of its constituent subatomic parts.
27:00In this closing chapter, we see chemistry as not only an excellent entry point to predicting how a new material behaves, but also a continuous process of innovation and discovery.
29:00Whether it is manipulating the pH of the soil to control the color of hydrangea flowers or meticulously controlling ingredients to bake the perfect pastry, acid-base chemistry is all around us.
28:00Some chemical reactions happen spontaneously while others are non-spontaneous and need to absorb energy to occur. Using Thermodynamics, and the calculation of Gibbs free energy scientists predict which reactions will occur.
28:00Solutions are all around us, from the air we breathe to the steel frames of many buildings. Solution chemistry is behind the extraction of materials for a variety of applications, for example, making a great cup of coffee.
27:00Elements combine in definite ratios. The results of a chemical reaction can be predicted using balanced chemical formulas. In this unit, we explore atomic mass, the limiting reactant & the yield of a reaction.
27:00Fundamentally, chemistry is the science of interacting particles. This unit covers the properties of solids, liquids, and gases in terms of the behaviour of invisible particles of matter that interact at the atomic scale.
27:00This unit explores how chemistry evolved from adapting materials for practical purposes to a science that systematically offers solutions to the world's challenges.
28:00Metals often play a key role in redox reactions, which are essential to all aspects of chemistry, particularly in many biochemical processes.
28:00Controlling rates of reactions has implications for a variety of applications including drug design and preventing corrosion. The latter half of this unit introduces nuclear reactions.