Câu 648: A scientist claims: “If a substance expands when heated and contracts when cooled, then all...

Question

Câu 648: A scientist claims: “If a substance expands when heated and contracts when cooled, then all liquids should behave this way.” Which counter-example disproves the claim? A. Mercury in a thermometer rising with heat. B. Water expanding as it freezes into ice. C. Oil expanding when heated. D. Alcohol evaporating at room temperature.

Accepted Answer

Câu 648 (VD): A scientist claims: “If a substance expands when heated and contracts when cooled, then all liquids should behave this way.” Which counter-example disproves the claim? A. Mercury in a thermometer rising with heat. B. Water expanding as it freezes into ice. C. Oil expanding when heated. D. Alcohol evaporating at room temperature. Phương pháp giải: Tìm trường hợp ngoại lệ (counter-example) cho quy luật "nóng nở ra, lạnh co lại". Giải chi tiết: Nước có tính chất đặc biệt: khi đóng băng (lạnh đi dưới 4 độ C), nó nở ra thay vì co lại. B. Water expanding as it freezes into ice (Nước nở ra khi đông thành đá). Đáp án cần chọn là: B .

Câu 648: A scientist claims: “If a substance expands when heated and contracts when cooled, then all liquids should behave this way.” Which...

Đề bài

Câu hỏi liên quan

Câu 608: If countries _______ stricter regulations on carbon emissions now, the global temperature r...

Câu 609: To preserve the ancient communal house, the local authorities decided to have a group of ex...

Câu 607: To stay competitive in the modern workplace, young professionals need to _______ initiative...