Eating sweet foods produces acid in the mouth, which can cause tooth decay. (High acid levels are measured by low pH values) Describe the information below and discuss the implications for dental health.
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Sample Response
The graph provides a breakdown of pH levels in the mouthPH level in the mouth from the moment of consumption to 40 minutes after the initial intake of sweet foods, namely fruit sugar, cane sugar and honey.
Overall, the pH dropped sharply before steadily returning to neutral over the forty-minute periodacid level reported a sharp drop over the forty-minute period. At pH levelsIn case of acid level from PH 3 to nearly PH 5.5 there is a high chance of tooth decay, but above pH 5.5,after PH 5.5 tooth decay becomes unlikely to occur.
Acid level was at its highest, at a PH 7 , the moment after the sweet food consumption. The PH level dropped sharply during the first 5 minutes after consumptionstarted to drop 5 minutes after eating the food. In addition, cane sugarthe cane sugar showedreported the sharpest decrease from PH 7 to approximately pH 3.5,PH 3.5 , which was followed by the fruit sugar at nearly PH 4.2 and honey at roughly pH 4.9the honey at roughly PH 4.9. Between 5 and 10 minutes after eating the honey, the PH level remained stable. As for the cane and the fruit sugar, the level started to rise after 5 minutes, which was followed by the honey after 10 minutes.
Furthermore, 25 minutes after the honey intake, PH level rebounded to its starting level of pH 7its peak, to PH 7. As for the fruit sugar, its level continued to rise steadilymarginally, before reaching PH 7 after 35 minutes. Lastly, cane sugar took a full 40 minutestook no less than 40 minutes to get to PH 7.
Why this response received Band 7.0
The response effectively highlights the main data points and trends, displaying good control over cohesive devices and sentence structures. However, it contains a conceptual inaccuracy regarding the inverse relationship between pH values and acid levels, leading to misleading descriptions in the overview and body. Clarifying the distinction between pH and acidity is the primary area for improvement.
IELTS Writing Criteria Scores
Task Achievement
Key trends and numerical details are identified across the timeframe, but pH values are conflated with acidity levels, introducing factual inaccuracies.
Ensure high pH values are accurately described as low acidity levels rather than high acid levels.
Coherence and Cohesion
The essay is logically structured into clear paragraphs that follow the chronological progression of the graph.
Vary transitional phrases to avoid repeating structures such as 'which was followed by' and 'as for'.
Lexical Resource
A good variety of trend vocabulary is used effectively to report changes over time.
Refine prepositional phrases and word choices to express data conditions more naturally.
Grammatical Range and Accuracy
A good range of complex sentence structures is produced with high overall grammatical accuracy.
Maintain consistent punctuation spacing around numbers and abbreviations throughout the text.