rection Choose the letter of the correct answer. 1. which of the following statements distinguishes pure substance from mixtures a. Can be separated by physical means c. Have no specific solubility and densities b. Consists of two or more kinds of matter d. Have constant boiling and melting temperatu narts from a mixture? TAL
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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