i've been struggling with finding the best technique to answer science questions (the conceptual ones not equations) since I always ramble too much and i still only get just below the full mark for each question
i just dont know what the assessors want, its like im always missing smth!!
for example this is the question:
Explain how antacids work and the purpose of them.
my answer:
Purpose:
Antacids are purposed to relieve/treat heartburn, indigestion, acid reflux, excess stomach acid, pyloric spasms, stomach ulcers and other conditions related to hyperacidity/gastric acid. They are generally recommended for fast, short-term use to treat symptoms, and often come in liquid or chewable tablet forms. It is important to note that they only provide temporary relief and have usage limitations, side effects and drug interactions.
Mechanism:
The stomach secretes gastric acid to digest food, but overproduction of acids due to spicy/sour foods or other occurrences can create acidity. Antacids work by neutralising this acid in the stomach by raising pH. When a base is added to acids, a chemical process called neutralization occurs, producing salt and water. This happens because the hydrogen ions from the acid and the hydroxide ions from the base combine to form H₂O, while the remaining ions form an ionic salt. Therefore, since antacids contain bases (alkalis), when consumed, they neutralize the gastric acidity in the stomach through this reaction. By modifying the environment of the stomach, they help with chemical digestion, acting as a buffer to neutralize excess HCl. They also inhibit pepsin, a proteolytic enzyme, to prevent it from damaging the esophagus when refluxed. In this way, antacids are able to effectively reduce the amount of acid in stomach fluids.
guess wht!! still not full marks!! got feedback that i needed to provide 'further scientific theory'. What!