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 acidity levels inacid level in the mouth from the moment of consumption to 40 minutes after the initial intake of sweet foods—namelysweet foods, namely fruit sugar, cane sugar, and honeycane sugar and honey.
Overall, the acid level reported a sharp drop in acid level over the forty-minute period.
The pH level wasAcid level was at its highest, at a pH 7, thePH 7 , the moment after the sweet food consumption. The PH level started to drop 5 minutes after eating the food. In addition, cane sugar showed the sharpest decreasethe cane sugar reported the sharpest decrease from PH 7 to approximately pH 3.5, whichPH 3.5 , which was followed by the fruit sugar at nearly PH 4.2 and the honey at roughly pHPH 4.9. Between 5 and 10 minutes after eating the honey, the PH level remained stable. As for cane and fruit sugarthe cane and the fruit sugar, the level started to rise after 5 minutes, which was followed by the honey after 10 minutes.
By 25 minutes after consuming honey,Furthermore, 25 minutes after the honey intake, PH level rebounded to its peak, to pH 7.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 40 minutescane sugar took no less than 40 minutes to get to PH 7.
Why this response received Band 6.0
The response effectively tracks the chronological changes in pH values for all three sweet items using varied vocabulary. However, it completely omits the critical pH 5.5 threshold and its implications for dental health, while offering a partially inaccurate overview. To improve, explicitly highlight the crucial threshold line and state the full pattern of drop and recovery in the overview.
IELTS Writing Criteria Scores
Task Achievement
The response presents data for all three food items over time, but misses the key pH 5.5 threshold where tooth decay occurs and provides an overview that misstates the overall trend.
Include the critical threshold line of pH 5.5 and explain how long acid levels remain in the danger zone for each sweet food.
Coherence and Cohesion
Information is arranged logically in chronological order across distinct paragraphs, though some cohesive phrasing is repetitive or clumsy.
Vary transitional phrases and avoid repeating word patterns such as acid level in consecutive clauses.
Lexical Resource
A good range of topic-specific vocabulary and trend terms is used accurately to describe data movement.
Ensure precise word choices when referring to chart features to avoid awkward combinations like acid level reported.
Grammatical Range and Accuracy
A mix of simple and complex sentence structures is used, though occasional grammatical and factual-timing inaccuracies occur.
Refine complex time clauses to accurately reflect that the pH drop happens during the first five minutes rather than starting after five minutes.