Which of the following steps performed in the Chemical Changes experiment is INCORRECTLY matched to the observed change? Select one: a. Formation of CuSO4: formation of blue solution b. Addition of H2SO4 to CuO: dissolution of black solid c. Addition of Zn dust: blue solution turns colorless d. Formation of Cu(OH)2: formation of black precipitate
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.
Which of the following steps performed in the Chemical Changes experiment is INCORRECTLY matched to the observed change?
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