Question

litmus n.石蕊 (1) 石蕊试纸遇到酸就变红。(2) 自我控制能力是成功的试金石。 Litmus is the mix of dyes that's used to make litmus paper, a scientific tool that makes it easy to see if a material has an acidic pH. Made from lichen, litmus can be absorbed onto paper which turns blue to indicate an alkaline substance and red if it's acidic. Litmus comes from the Middle Dutch word lijkmoes, which combines lac, "red resinous substance" and moes, "pulp."

Accepted Answer

英 ['lɪtməs] 美 ['lɪtməs] (1) Litmus paper turns red in the presence of an acid.(2) A sense of control is the litmus test for success. Litmus is a special dye that's used to determine how acidic a substance is. Scientists use litmus to test liquids or gases to see if they're an acid or a base.

英语单词	litmus
英美音标	英 ['lɪtməs] 美 ['lɪtməs]
中文释义	n.石蕊
英语例句	(1) Litmus paper turns red in the presence of an acid. (2) A sense of control is the litmus test for success.
中文例句	(1) 石蕊试纸遇到酸就变红。 (2) 自我控制能力是成功的试金石。
vocabulary简明	Litmus is a special dye that's used to determine how acidic a substance is. Scientists use litmus to test liquids or gases to see if they're an acid or a base.
vocabulary扩展	Litmus is the mix of dyes that's used to make litmus paper, a scientific tool that makes it easy to see if a material has an acidic pH. Made from lichen, litmus can be absorbed onto paper which turns blue to indicate an alkaline substance and red if it's acidic. Litmus comes from the Middle Dutch word lijkmoes, which combines lac, "red resinous substance" and moes, "pulp."

Litmus Paper Turns Red Test Acidic Substance 英