Electronegativity Lab

In reference to the collision theory, molecules act as small spheres that collide and bounce off each other, transferring energy among themselves when the collide. In order for a reaction to occur, there must be collisions between molecules. Through experimentation, factors are discovered that influence the reaction rates of chemical reactions include the concentration of reactants, temperature, surface area, the physical state of reactants, and a catalyst. This experiment regarding the factors that affect reaction rate tests the effects of increased concentration and

Many factors effect reaction rates, two shown above include temperature and concentration. Concentration affects the rate of reactions because the more concentrated a solution the more likely collisions between particles will be. This is simply because there are more particles present to collide with each other. When the temperature is higher, particles will

In this experiment, the limiting reactant of all trials was the magnesium while the excess reactant was the hydrochloric acid. This means that, in this reaction, the magnesium is used up completely first, leaving extra hydrochloric acid behind. This was found through stoichiometry, as the reactants were converted into each other through mass-mass calculations. As such, through stoichiometry, it was discovered that magnesium was the limiting reactant as 2.5 grams of magnesium requires 7.5g or 7.5ml (Note: 1g = 1ml) of hydrochloric acid to react. On the other hand, 50g of hydrochloric acid requires approximately 17g of magnesium to react, which is far from the original amount had. Likewise, if 2.5g of magnesium, the largest amount of magnesium

Therefore, because they are closer the particles will collide more often. The more often they collide the more chance they have of producing a productive reaction. If I had a wide range of molarities, it would be easy to see this pattern. METHOD Before conducting our experiment where we would get our facts and evidence from, we carried out a pre-test.

How does Concentration affect the rate of reaction between Magnesium and Hydrochloric acid? Secondary resources: Chemical reactions only occur when reacting particles collide with each other, with sufficient energy to react, this is called the collision theory. The minimum amount of energy required to cause this reaction is called the Activation energy. There are four main factors which affect the rate of reaction.

always give out or take in energy most of the time this is heat energy

How do different concentrations of Hydrochloric Acid (0.1 M, 0.5 M, 1.0 M, 2.0 M) affect the rate of reaction when reacting with Magnesium ribbon strips?

A chemical reaction takes place using displacement reaction between a metal and acid, for example when the hydrogen and magnesium react the

Science Coursework – What factors effect the rate of reaction between magnesium and hydrochloric acid? Background Knowledge There are four factors that can affect the rate of reaction and they all rely on the collision theory. This is basically how hard and how often particles collide with each other. The more and harder they collide, the faster the reaction time will be.

Chemical kinetics involving reaction rates and mechanisms is an essential part of our daily life in the modern world. It helps us understand whether particular reactions are favorable and how to save time or prolong time during each reaction. Experiment demonstrated the how concentration, temperature and presence of a catalyst can change the rate of a reaction. 5 runs of dilution and reaction were made to show the effect of concentration on chemical reactions. A certain run from the previous task was twice duplicated to for a “hot and cold” test for reaction rate. The prior run was again duplicated for a test with

The diagram shows that there are very few particles, indicating a weak concentration. This results in a low chance of chemical reactions occurring. However, if the concentration was strengthened there would be a higher chance of collision and reaction. This diagram shows many particles, indicating a high concentration.

The term concentration refers to the amount of a substance present in a certain volume of liquid or gas. Increasing the concentration of the reactants will increase the rate of the reaction. If the concentration of a reactant in a solution is increased, there will be a greater number of particles in a given volume of solution. This means the particles are more likely to collide and therefore react when there are more of them. Collisions between particles are necessary for the reactants to rearrange and form the products. In this experiment, the rate of the reaction between magnesium ribbon and hydrochloric acid will be increased by adding a higher concentration of hydrochloric acid each time. The chemical equation between magnesium ribbon and hydrochloric acid can be written as:

Experiment to investigate factors affecting the rate of reaction between magnesium ribbon and hydrochloric acid

Chemical reactions make new things by rearranging other things. In a chemical reaction, the main change that occurs relates to the way atoms are bonded to each other, in order to change those connections, bonds must be broken and new bonds be formed.

The Ancient Greeks were the firsts to speculate on the composition of matter. They thought that it was possible that individual particles made up matter.