A. chemical change B. physical change C. both physical and chemical change D. neither physical nor chemical change 相关知识点: 试题来源: 解析 B。解析:“For example, when ice melts, it changes from a solid to a liquid, but it is still water.”说明冰融化是物理变化。反馈...
A. chemical reaction B. physical change C. biological process D. electrical phenomenon 相关知识点: 试题来源: 解析 B。冰融化成水是一种物理变化,没有新物质生成。选项 A 化学反应会有新物质生成;选项 C 生物过程与冰融化无关;选项 D 电现象不符合冰融化的情况。反馈...
Which is a chemical change? A. Melting ice B. Breaking a glass C. Burning wood D. Cutting paper 相关知识点: 试题来源: 解析 C。燃烧木材是化学变化。A 选项“融化冰”是物理变化;B 选项“打碎玻璃”是物理变化;D 选项“剪纸”是物理变化。化学变化会产生新物质,燃烧木材会产生新物质,所以选 C。
题目Which of the following is a chemical change? A. Melting ice B. Cutting paper C. Burning wood D. Folding clothes 相关知识点: 试题来源: 解析 C。解析:冰融化(Melting ice)、剪纸(Cutting paper)和叠衣服(Folding clothes)都是物理变化,燃烧木材(Burning wood)是化学变化。
百度试题 结果1 题目Which of the following is an example of a chemical change? A. Melting ice B. Boiling water C. Burning wood D. Dissolving salt in water 相关知识点: 试题来源: 解析 C 反馈 收藏
Physical and ecological processes in the marginal ice zone of the northern Barents Sea during the summer melt period. Journal of Marine Systems 27, 131-159.Falk-Petersen S, Hop H, Budgell WP, Hegseth EN, Korsnes R, Loyning TB, Orbaek JB, Kawamura T, Shirasawa K (2000) Physical and ...
1 Latent heat of fusion of ice Aim: To determine the latent heat of fusion of ice by using calorimetry, with radiation corrections. Apparatus Required: (1) Copper Calorimeter, (2) Stirrer (3) Ice (4) Balance (5) Thermometer and (6) stopwatch Theory: When a chemical or physical change...
change. Owing to changes in Earth’s orbit, geological factors, and/or changes in Solar output, Earth occasionally experiences significant reductions in its surface and atmospheric temperatures. This results in long-term periods of glaciation, or what is more colloquially known as an “ice age”....
Arctic sea ice is a spatially complex physical environment - a vast biome composed of multiple habitats such as the upper and lower ice surfaces, snow cover, brine channels, melt ponds, ice openings and ice floes of all sizes, and the surrounding sea water. Changes in the amount of ocean ...
The physical environment of the surface sea layer (e.g., presence of sea-ice, meltwater, and seawater) that influences air–sea gas exchange.Fig. 5: Potential source contribution function (PSCF) analysis of gaseous elemental mercury (GEM) and spatial distribution of the sea-ice fraction, gas...