A jewelry company has announced that they have created gold from reacting copper and carbon in a chemical process. According to Dalton's atomic theory, is this possible? A. yes, because atoms of different elements can physically mix together. B. no, because copper, carbon and gold are all elements, and atoms of one element can never be changed into atoms of another element through a chemical reaction. C. yes, because all elements contain atoms and gold is an element. D. no, because chemical reactions are not possible.

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Q: In a neutral atom the number of protons equals

A:

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Q: What is the volume of a molybdenum atom in microliters?

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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.