Can someone check if these are right:
Tell reaction rate
1.) one antacid tablet is placed in a glass of cold water, while another table is placed in a glass of hot water. TEMPERATURE?
2.) a mixture of baking powder, flour, sugar, and eggs is placed in the oven. TEMPERATURE?
3.) a large medicine tablet is crushed before being swallowed. SURFACE AREA?
4.) Enzymes in the small intestine act on food as it is being digested. CATALYSTS?
5.) bellows are used to fan a fire in a fireplace SURFACE AREA?
6.) charcoal bricks are broken into smaller pieces before being placed I'm an outdoor grill. SURFACE AREA?
7.) a soft drink containing carbonic acid, which decomposes into carbon dioxide and water, is placed in the refrigerator. CONCENTRATION?
See my response below.
Ms. Sue is no help!
To figure out the factors that affect reaction rate in each scenario, you can consider the following:
1) Temperature: In this case, you can compare the reaction rates between the antacid tablet in cold water and the antacid tablet in hot water. The higher the temperature, the faster the reaction rate. To check if your answers are correct, you can refer to the concept of the kinetic theory of gases, which states that the rate of a chemical reaction generally increases with an increase in temperature.
2) Temperature: For this scenario, when the mixture of baking powder, flour, sugar, and eggs is placed in the oven, the reaction rate is affected by the oven's temperature. Higher temperatures in the oven will speed up the reaction, while lower temperatures will slow it down. Checking the correct answer can be done by referring to basic knowledge about cooking and baking.
3) Surface area: When a large medicine tablet is crushed before being swallowed, it increases the surface area exposed to the digestive enzymes, which increases the reaction rate. To verify your answer, consider the concept that a greater surface area can enhance chemical reactions by providing more area for reactant molecules to interact with each other.
4) Catalysts: In the small intestine, enzymes act as catalysts to speed up the digestion process. Catalysts increase the reaction rate without being used up in the reaction themselves. Agreeing with this idea would confirm that enzymes in the small intestine act as catalysts.
5) Surface area: Bellows are used to fan a fire in a fireplace. By using bellows, you increase the airflow and provide more oxygen to the fire, resulting in increased reaction rates due to more efficient combustion. Verify your answer by understanding the relationship between surface area and the availability of reactants, such as oxygen, in this case.
6) Surface area: When charcoal bricks are broken into smaller pieces before being placed on an outdoor grill, it increases the surface area exposed to oxygen, accelerating the rate of combustion. Checking if your answer is correct involves applying the same concept as for scenario 5.
7) Concentration: When a soft drink containing carbonic acid is placed in the refrigerator, its reaction rate decreases due to the lower temperature. However, this scenario specifically mentions concentration. Carbonic acid decomposes into carbon dioxide and water, so the concentration of carbonic acid decreases over time. To check your answer, you can recall that lower concentration typically slows down reaction rates.
By comparing your provided answers against the explanations above and considering the fundamental principles involved in each scenario, you can verify if your answers are correct.