hose oxidation state changes, show on that line the # of electrons and if gained or lost. Then enter the correct coefficients for all reactants and products. __ Cu (s) + ___ HNO3 (aq) __ Cu(NO3)2 (aq) + ___ H2O (l) + ___ NO2 (g)
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.
1.
__ Cu (s) + ___ HNO3 (aq) __ Cu(NO3)2 (aq) + ___ H2O (l) + ___ NO2 (g)
2. Balance the following redox reaction using the oxidation state method. Be sure to show your work… so show the oxidation states of all elements in all reactants and products, draw a line connecting the elements whose oxidation state changes, show on that line the # of electrons and if gained or lost. Then enter the correct coefficients for all reactants and products.
___ I– (aq) + __ Cr2O72– (aq) + __ H+ (aq) ___ I2 (s) + ___ H2O (l) + ___ Cr3+ (aq)
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