You know that neutrons<span> are found in the nucleus of an </span>atom<span>. Under normal conditions, protons and </span>neutrons<span> stick together in the nucleus. During radioactive decay, they may be knocked out of there. </span>Neutron<span> numbers are able to change the mass of </span>atoms<span>, because they weigh about as much as a proton and electron together.</span>
Heating up a reaction does increase the number of collision only.
Hence, Option C is correct answer.
<h3>What is Collision Theory ? </h3>
According to the collision theory, the reaction take place when the collision occur and molecules having sufficient energy or threshold energy for collision.
The collision of molecules depend on the kinetic energy of molecules. Greater the kinetic energy greater the number of molecules collide. Lesser the kinetic energy lesser will be collision.
<h3>How temperature affect the collision theory ?</h3>
With an increase in temperature, there is an increase in energy that can be converted into activation energy in a collision, and that will increase the reaction rate. A decrease in temperature would have the opposite effect. With an increase in temperature, there is an increase in the number of collision.
Thus from the above conclusion we can say that Heating up a reaction does increase the number of collision only.
Hence, Option C is correct answer.
Learn more about collision theory here:
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It should be Carbon Nanotubes
Litmus is an indicator
Charged particles are ions
Acids contain H+ ions
Bases contain OH - ions
Hydronium ions are H3O+
Now, I have to take issue with the last one
A base of pH 14 is not a strong base, it would be a highly concentrated base. A strong base is a base that completely deionizes in water.
But technically, for the purpose of your answer strong base = pH 14
According to Bronsted-Lowry theory of acids and bases, an acid is proton donor and a base is proton acceptor. When an acid loses the proton, it forms the conjugate base of the acid. Similarly when a base accepts a proton, it forms the conjugate acid if that base. A conjugate acid base pair differs by a single proton.
Given the weak acid 
. It can lose a proton to form the conjugate base.
Therefore, the conjugate base of is 
.
