Matter Interactions Sample Work portfolio

Answer 1

Here are a few examples of work I have done in the field of matter interactions:

1. Experiment on the effect of temperature on the solubility of different substances: In this experiment, I investigated how the solubility of various substances (such as sugar, salt, and baking soda) changed with increasing temperature. I prepared solutions of each substance at different temperatures and measured the amount of solute that dissolved in each case. The results showed that temperature had a significant impact on solubility, with most substances showing increased solubility at higher temperatures.

2. Study on the behavior of acids and bases in different environments: In this study, I explored how acids and bases reacted in various scenarios. I tested the pH levels of different substances using litmus paper and performed titrations to determine the concentration of acids and bases in a solution. The experiment highlighted the differences in behavior between acids and bases, with acids being sour and capable of turning litmus paper red, while bases were bitter and turned litmus paper blue or purple.

3. Demonstrations of physical and chemical changes: As part of my work portfolio, I have also included a series of demonstrations showcasing different types of physical and chemical changes. These demonstrations include examples such as mixing vinegar with baking soda to produce a fizzy reaction, melting ice to a liquid state, and burning paper to create ash. Each demonstration is accompanied by an explanation of the underlying scientific principles and the difference between physical and chemical changes.

4. Assessment of the electrical conductivity of different materials: In this experiment, I tested the electrical conductivity of various materials such as metals, conductive liquids, and non-conductive solids. Using a circuit with a power supply and a light bulb, I measured whether the materials allowed the flow of electricity or not. The results showed that metals were highly conductive, while non-conductive materials did not allow the electric current to pass through.

5. Investigation on the effects of different catalysts on chemical reactions: I conducted a series of experiments to examine the impact of various catalysts on the rate of chemical reactions. By measuring the time it took for a reaction to occur in the presence and absence of different catalysts, I was able to determine their effectiveness. This study revealed that catalysts can significantly speed up chemical reactions without being permanently changed or consumed in the process.

These examples provide a glimpse into my work in the field of matter interactions, showcasing a range of experiments and studies that demonstrate an understanding of the topic and its practical applications.