I found a percentage difference of 6.23% between the mass of a product (zinc iodide) and the mass of the reactants (zinc and iodine). This is a lab, so we had to combine the reactants, stir for a long time, then heat until the dry reaction product formed (it's a powder). This is the question in my lab manual: Do your observations support the principle that mass is conserved in a chemical reaction, that is, that the mass of the products equals the mass of the reactants? Discuss the reason for your calculated percentage difference. Why would there be a difference? I'm a little lost.
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.
I found a percentage difference of 6.23% between the mass of a product (zinc iodide) and the mass of the reactants (zinc and iodine). This is a lab, so we had to combine the reactants, stir for a long time, then heat until the dry reaction product formed (it's a powder).
This is the question in my lab manual:
Do your observations support the principle that mass is conserved in a
Why would there be a difference? I'm a little lost.
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