Set 6: Words in Context (Intermediate)
Explanation
PASSAGE
The chemical reaction is highly ______; it proceeds quickly and releases a large amount of heat, posing a risk if not carefully controlled.
Which choice completes the text with the most logical and precise word or phrase?
Detailed Answer Explanation
This question asks for the meaning of a word as used in this specific context. A reaction that happens quickly, releases heat, and risks danger is 'volatile'. Volatile refers to a substance that changes easily or a situation that can change rapidly and unpredictably. Words can have multiple meanings, and context determines which meaning applies. Read the surrounding sentences carefully. Substitute each answer choice to see which maintains the intended meaning and fits the context. Many vocabulary words have multiple dictionary definitions, but only one fits the context. Use the surrounding sentences as clues. Try substituting each answer choice to see which one preserves the author's intended meaning without changing the sentence's message.
Key Evidence:
• "proceeds quickly"
• "releases ... heat"
• "posing a risk"
Why others are wrong: D (Inert means chemically inactive.), C (Silent refers to sound.), B (Gradual means slow.).
🎉 Set Complete!
You've reviewed all explanations. Ready to try another set?
🎯 Keep Practicing!
Master all sections for your best SAT score