Write balanced equations for each of the following reactions(some of these are analogous to reactions shown inthe chapter). (a) Aluminum metal reacts with acids to formhydrogen gas. (b) Steam reacts with magnesium metal togive magnesium oxide and hydrogen. (c) Manganese(IV)oxide is reduced to manganese(II) oxide by hydrogen gas.(d) Calcium hydride reacts with water to generate hydrogengas.
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.
Write balanced equations for each of the following reactions
(some of these are analogous to reactions shown in
the chapter). (a) Aluminum metal reacts with acids to form
hydrogen gas. (b) Steam reacts with magnesium metal to
give magnesium oxide and hydrogen. (c) Manganese(IV)
oxide is reduced to manganese(II) oxide by hydrogen gas.
(d) Calcium hydride reacts with water to generate hydrogen
gas.
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