Metallic luster refers to the way light casts off of a mineral. Polished metals such as gold have a metallic luster, which makes them look bright and shiny, and reflect more light than other minerals. There are also minerals that have metallic luster, but are not shiny or reflect much light, which is called dull metallic luster.
Metallic luster - bright, shiny
Dull metallic luster - not shiny
Answer: X is an Esther
Explanation: alcohol and carboxylate acid forms esters
Enzymes affect the rate of the reaction in both the forward and reverse directions; the reaction proceeds faster because less energy is required for molecules to react when they collide. Thus, the rate constant (k) increases. Figure 3: Lowering the Activation Energy of a Reaction by a Catalyst.
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There are 3 experiments which helps to under water evaporation system.
- Both the temperature of the air surrounding the water and the rate of evaporation increased.
- In the second experiment, we observed an increase in air flow around the water, and this time, the rate of evaporation increased as well.
- In the third and final experiment, we observed an increase in the amount of light in the room, and this time, the rate of evaporation increased as well.
- Because the kinetic energy of a substance can be measured by its temperature, increasing in the temperature or kinetic energy of the air around water will also increase the kinetic energy of the water, which will increase the rate of evaporation.
- It's crucial to have good air flow since it drives water droplets in the air away from you, reducing the amount of humidity in the region. Because there will then be space for the evaporated air or space for the evaporated water to flow into the air, it will then be simpler for the water to really evaporate.
- Water in the presence of sunlight is given extra energy, which increases evaporation.
Learn more about Evaporation here:
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