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.
![Use the graph to answer the following questions:
Reactants
Products
Energy](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F94639906-5f91-464d-a2bf-a795f347fa85%2Fb64dff07-d9e3-495c-8b63-cfa538bbd770%2Fsg4m109_processed.png&w=3840&q=75)
![What is the line labeled X referring to in the graph above?
Product energy
Reactant energy
Activation energy
Thermochemistry
What does adding a catalyst do to the value of the X?
Increase
Decrease
No change
Depends on the temperature](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F94639906-5f91-464d-a2bf-a795f347fa85%2Fb64dff07-d9e3-495c-8b63-cfa538bbd770%2Ffp9kdto_processed.png&w=3840&q=75)
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