Write balanced chemical equations for each of the following equation descriptions. You do not need to include the states of the reactants or products. a) Aluminum metal reacts with copper(II) bromide to produce aluminum bromide and copper metal. b) Lead(II) nitrate reacts with sodium bromide to produce lead(II) bromide and sodium nitrate. c) Barium metal reacts with oxygen gas to produce barium oxide (Recall that oxygen is one of the diatomic molecules that are referred to by their element's name). d) Aluminum sulfate reacts with barium iodide to produce aluminum iodide and barium sulfate.
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
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
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All the reactions are example of chemical reactions.
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