HomePracticeListening: Fill in the BlanksChemical Method
#299Listening: Fill in the BlanksAcademic,CoreMedium

Chemical Method

Official Question Material
Prep: Varies

Official Audio Prompt

Finally, we take a look at how to mix and unmix [blank] at the flick of a switch. Sandrine tells us more. Oil and water don't usually mix, but the new chemical sensitive to light has been added here to [blank] them together. When [blank] to UV light, the chemical changes its structure and become soluble in water. This causes two layers to form with the oil floating on top of the water chemical combo. This method should be cheaper than the current [blank] which involves using high energy centrifuges.

Sample Answer & Audio Transcript

Finally, we take a look at how to mix and unmix liquids at the flick of a switch. Sandrine tells us more. Oil and water don't usually mix, but the new chemical sensitive to light has been added here to blend them together. When exposed to UV light, the chemical changes its structure and become soluble in water. This causes two layers to form with the oil floating on top of the water chemical combo. This method should be cheaper than the current alternative which involves using high energy centrifuges.
Instant AI Speech & Writing Feedback

Practice This Question with Real-Time AI Scoring

Record your voice or submit your writing to get official Pearson-aligned scores (10-90) across Oral Fluency, Pronunciation, Grammar, and Content in 1.2 seconds.

Launch AI Practice Now

Pearson Official Scoring Guide for Listening: Fill in the Blanks

Scored Enabling Skills

  • Communicative Skills & Enabling Skills

Timing Standard

Response Window: Official Pearson Exam Standard

💡 Examiner Strategy & Pro Tip:Maintain focus on accuracy, timing, and Pearson automated scoring rubrics.
Previous QuestionPueblos
Browse All Listening: Fill in the Blanks Questions
Next QuestionPhone Users