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.
Sample Response
The linebar graph illustrates the pH level in the mouthacid level of mouth after the consumption ofafter consumption of three different sweeteners:nutrients such as fruit sugar, cane sugar and honey over athe period of forty minutes. According to the bar graph, it is clearobvious that cane sugar is the sweetener producing the greatest aciditymost acidic nutrient.
After the consumption of cane sugar, the acidity level in the mouthacidity level of month rose sharply within five minutesincreased sharply in five minutes and reached a pH of 3.53.5 pH level. From now onwards acidity level of mouth decreases steadily and reached the normal level after thirty-five minutes. However, teeth remained below the tooth-decay threshold for about 25 minutesat the dangerous level more than 25 minutes.
Fruit sugar produced the next-lowest pHAnother acidic nutrient is fruit sugar. After fruit sugar was consumed,After the consumption, the pH level of mouth fell rapidlydecreased hurriedly and reached 4.25 in five minutes. After that, the level of acidity of month reached a normal level in 15 minutes. Therefore, teeth remained below the tooth-decay threshold for about 15 minutesat the dangerous level for 15 minutes. The last and the least acidic nutrient is honey, after the consumption of honey acidity level of mouth increased dramatically in five minutes and reached 5 pH level and then, plateau for 5 minutes and from now onward decreased moderately. However, teeth remained in an acidic environment for 10 minutes.
To conclude, the most hazardous sweetenermore hazardous nutrient for teeth is cane sugar because teeth remained in an acidic environment for more than 25 minutes.
Why this response received Band 6.0
The response covers all three substances, correctly recognises cane sugar as the greatest dental risk, and links time below the danger threshold to tooth decay. Its main limitation is data interpretation: fruit sugar remains below the safe threshold for roughly 20 minutes, and several recovery times are confused with a return to neutral pH. Prioritise distinguishing falling pH from rising acidity and reporting each threshold crossing accurately.
IELTS Writing Criteria Scores
Task Achievement
All three lines and the dental implication are addressed, but several duration and recovery claims are inaccurate or conceptually confused.
State the minimum pH for each substance and compare how long each line remains below pH 5.5, without calling that threshold neutral.
Coherence and Cohesion
The response is organised by substance and ends with a relevant conclusion, though linking is repetitive and the long honey sentence is poorly controlled.
Use one balanced detail paragraph for the initial drops and another for recovery times and danger durations.
Lexical Resource
Some suitable acid and trend vocabulary is used, but repeated spelling and collocation errors obscure the pH-versus-acidity distinction.
Use precise terms such as "pH fell", "acidity increased", "crossed the danger threshold", and "returned to neutral".
Grammatical Range and Accuracy
Meaning is usually recoverable, but tense shifts, missing articles, faulty verb forms, and sentence-boundary errors occur frequently.
Keep the description consistently in the past tense and break the comma-spliced honey description into controlled clauses.
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IELTS Academic Writing Task 1
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.
Your response
Write the task yourself, then compare your choices with the annotated response.