ductile, A substance that can be drawn out into wires. 可拉成细丝的, 一种可以被拉成金属丝的物质。, malleable, A substance that can be bent or hammered into shape. 有延展性的, 可弯曲或锤击成形的物质。, materials, Substances from which objects are made. 材料, 制造物体的物质。, shiny, A surface that reflects light, such as polished metal. 闪亮的, 反射光的表面，如抛光的金属。, conduct, To allow electricity or heat to pass through. 行为, 使电或热通过。, magnetic, Attracted to a magnet. 有磁性的, 被磁铁吸引。, sonorous, A substance that makes a ringing sound when hit. 雄浑的, 撞击时发出响声的物质。, brittle, Something that breaks easily with a snap. 易碎的, 易碎的东西。, insulator, A substance that does not conduct heat or electricity. 绝缘体, 不导热或不导电的物质。, shatter, To break into many pieces. 粉碎, 破碎成许多碎片。, contact, Two things touch each other. 联系, 两样东西相互接触。, distinguish, To tell the difference between things. 区分, 区分事物之间的差异。, examine, To look at something closely in order to discover something about it. 检查, 仔细观察某物以发现它的某些东西。, alloy, A mixture of metals. 合金, 金属的混合物。, bronze, An alloy made by mixing copper and tin. 青铜, 铜和锡混合而成的合金。, steel, An alloy made of a mixture of iron and carbon and/or other metals; steel is much harder than iron. 钢, 由铁、碳和/或其他金属的混合物制成的合金；钢比铁硬得多。, disrupt, Upset the pattern. 扰乱, 颠倒模式。, condenser, A piece of laboratory glassware that can be used to separate mixtures of two liquids. 冷凝器, 一种实验室玻璃器皿，可用于分离两种液体的混合物。, conical flask, A piece of laboratory glassware. 锥形烧瓶, 实验室玻璃器皿。, filter funnel, A piece of laboratory equipment into which filter paper is placed. 过滤漏斗, 放置滤纸的实验室设备。, filter paper, A special type of paper that can be used in a filter funnel to separate solid particles from those in a liquid. 滤纸, 一种特殊类型的纸，可用于过滤漏斗中，以将固体颗粒与液体中的颗粒分离。, acid, A substance which contains hydrogen particles and has a pH lower than 7; the chemical opposite of an alkali. 酸的, 一种含有氢颗粒且pH值低于7的物质；碱的化学反义词。, corrosive, A substance that is able to dissolve or eat away other materials such as your skin. 腐蚀性的, 一种能够溶解或吞噬其他物质（如皮肤）的物质。, harmful, Something that causes damage. 有害的, 造成损害的东西。, irritate, To cause itching or sores on your body. 刺激, 使身体发痒或疼痛。, alkali, A substance that contains hydroxide particles and has a pH higher than 7; the chemical opposite of an acid. 碱, 一种含有氢氧化物颗粒且pH高于7的物质；酸的化学反义词。, flammable, A substance that can catch fire easily. 易燃的, 容易着火的物质。, oxidising, A substance that gives off a large amount of heat when in contact with other substances. 氧化, 当与其他物质接触时释放出大量热量的物质。, toxic, Poisonous. 有毒的, 引起中毒的, indicator, A substance that turns different colours in acid and alkali. 指示信号, 一种在酸和碱中变色的物质。, litmus, A dye that is used as an indicator. 石蕊, 用作指示剂的染料。, neutral, A substance that is neither acid nor alkali and is at pH 7. 中立的, 一种既不酸也不碱的物质，pH值为7。, pH scale, A scale that measures the strength of acids and alkalis. pH值刻度, 测量酸碱强度的刻度。, universal indicator, An indicator, made up from a range of other indicators, which shows how acidic or alkaline a substance is. 通用指示器, 由一系列其他指示剂组成的指示剂，用于显示物质的酸性或碱性。.

07-5 Properties of materials

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