You are hiking in the mountains and find a shiny gold nugget.It might be the element gold, or it might be “fool’s gold,”which is a nickname for iron pyrite, FeS2. Which of the followingphysical properties do you think would help determineif the shiny nugget is really gold—appearance, meltingpoint, density, or physical state?
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.
You are hiking in the mountains and find a shiny gold nugget.
It might be the element gold, or it might be “fool’s gold,”
which is a nickname for iron pyrite, FeS2. Which of the following
physical properties do you think would help determine
if the shiny nugget is really gold—appearance, melting
point, density, or physical state?
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