Lab Reports

Purpose (Junior/High School):

The purpose is a brief statement that explains why the experiment is being conducted and what it aims to achieve. It outlines the main objective of the investigation, often linking it to a specific scientific concept or question being studied. Unlike a hypothesis, which predicts the outcome, the purpose focuses on the broader reasoning behind the experiment, such as understanding a phenomenon, testing a principle, or observing the effects of a variable. A well-written purpose sets a clear direction for the experiment and helps readers understand its significance in the context of the subject matter.

Examples:

• To investigate how temperature affects the rate of reaction between magnesium and hydrochloric acid.
  
• To investigate the relationship between the angle of incidence and the angle of reflection to verify the law of reflection.
  
• To determine the effect of different concentrations of salt solution on the mass of potato cells through osmosis.
  
• To measure the acceleration due to gravity by analyzing the motion of a freely falling object.
  

Objective or Abstract (University):

The Objective or Abstract provides a concise summary of the experiment, highlighting its purpose, methods, key results, and conclusions. It serves as a snapshot of the entire report, allowing readers to quickly understand the context and significance of the study. A strong abstract is typically brief, around 150-250 words, and avoids unnecessary details, focusing instead on the essential aspects of the work. It should answer key questions: What was the aim of the experiment? How was it conducted? What were the main findings? And what do those findings mean? By offering a clear and engaging overview, the abstract sets the tone for the rest of the report and helps the reader decide its relevance to their interests.