Here’s a ready-to-use formula with examples and tips so you can adapt it to any experiment:
1. Title
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Short, specific, tells what the experiment is about.
Example: Effect of Light Intensity on Plant Growth
2. Abstract (3–4 sentences)
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What you did
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How you did it
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Main result
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Main conclusion
Example:
We tested how light intensity affects plant growth. Plants were grown under bright light and dim light for two weeks. Plants in bright light grew taller and had more leaves. This shows light intensity affects plant growth positively.
3. Introduction (4–5 sentences)
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Background info: why the topic is important
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State the aim clearly
Example:
Plants need light for photosynthesis, which helps them grow. The amount of light can affect their height and health. Understanding this helps farmers and gardeners improve crop yields. The aim of this experiment was to see how different light intensities affect plant growth.
4. Hypothesis (1 sentence)
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“If … then … because …”
Example:
If plants receive more light, then they will grow taller because light is essential for photosynthesis.
5. Materials and Methods
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List items used (bulleted list)
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Steps in order (numbered)
Example:
Materials: -
6 small potted plants
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Ruler
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Bright lamp
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Dim lamp
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Water
Method:
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Place 3 plants under bright light and 3 under dim light.
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Give equal water to all plants daily.
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Measure plant height every two days for two weeks.
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Record results in a table.
6. Results
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Table or graph + 2–3 sentences describing it (no explanation yet).
Example Table:
| Light Condition | Average Height (cm) |
|---|---|
| Bright Light | 15 |
| Dim Light | 8 |
Description:
Plants in bright light grew more than plants in dim light. The tallest plant was in the bright group.
7. Discussion (Explain why results happened)
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Compare to hypothesis
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Give scientific reason
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Mention any errors or improvements
Example:
The results support the hypothesis because plants in bright light grew taller. This is likely because more light increases photosynthesis, producing more energy for growth. Some differences in plant height could be due to natural variation. Future experiments could test more light levels for better accuracy.
8. Conclusion (2 sentences)
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Restate the main finding
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Link to aim
Example:
Plants in bright light grew significantly taller than those in dim light. This shows that higher light intensity helps plants grow better.
✅ Exam tip: If you can memorize this template and just swap the topic, you can write any lab report neatly and score high. Keep sentences short and direct
here’s a full lab report on how salt affects the melting of ice using the exact order you need for the exam:
Title
Effect of Salt on the Melting Rate of Ice
Abstract
We investigated how adding salt affects the melting rate of ice. Ice cubes were placed in separate containers with and without salt, and the melting time was recorded. The ice with salt melted faster than the ice without salt. This shows that salt lowers the freezing point of water, causing ice to melt more quickly.
Introduction
Ice usually melts at 0 °C, but adding substances like salt can change this process. Salt is known to lower the freezing point of water, a principle used in winter to melt road ice. This experiment aimed to observe the difference in melting rates of ice with and without salt.
Hypothesis
If salt is added to ice, then the ice will melt faster because salt lowers the freezing point of water.
Materials and Methods
Materials:
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4 ice cubes
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Table salt
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2 bowls
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Stopwatch
Method:
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Place 2 ice cubes in each bowl.
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Sprinkle 2 tablespoons of salt on the ice in one bowl.
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Leave the other bowl without salt as the control.
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Start the stopwatch and observe the melting process.
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Record the time taken for the ice to completely melt in each bowl.
Results
| Condition | Time to Melt (minutes) |
|---|---|
| Ice with salt | 12 |
| Ice without salt | 20 |
Description:
The ice cubes with salt melted in 12 minutes, while the ice cubes without salt took 20 minutes.
Discussion
The results support the hypothesis because the ice with salt melted faster. Salt lowers the freezing point of water, meaning the ice needs a lower temperature to stay frozen. As a result, it melts more quickly at room temperature. Slight variations in melting speed could be due to differences in ice cube size or uneven salt distribution. A more precise method would be to use identical ice cubes and measure salt exactly.
Conclusion
Salt causes ice to melt faster by lowering its freezing point. This is why salt is effective for melting ice on roads in winter.
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