A Liquids expand when they are heated. B Liquids start to bubble when they get close to boiling point. C Molecules in the liquid expand when they are heated. D Molecules near to the surface of the liquid escape into the air. 相关知识点: 试题来源: 解析 A 反馈 收藏 ...
How does air temperature affect snowmelt rates? How does evaporation affect temperature? Why is water vapor concentration on the rise? Why do liquids expand when heated? Why do some chemical reactions release heat while others absorb heat?
Why do gases condense when they are cooled? How does temperature affect the kinetic energy of gas molecules? Why do liquids expand when heated? How are fronts and air masses related? How does the movement of air molecules cause pressure?
Hot water makes the metal of the jar expand; this makes the cover loose. Most objects expand when heated because they are made of molecules that are in constant motion. Heat makes molecules(分子)move faster. The hotter the molecules become the faster they move and the more space they need...
polylactic acid (PLA), is a biodegradable plastic made from renewable sources like corn starch. PLA has many benefits, such as a low melting point ideal for lightweight and consumer use. It’s also strong, doesn’t expand as much as other materials when heated, and has good adhesion to ...
Assume that (living long ago) we have suddenly noticed that some metal pieces expand when heated. If we are old-fashioned inductivists, we might then reason as follows: premise: when heated, these (some) pieces of metal expand hence: --- conclusion: when heated, all pieces of metal expan...
aThe air in the lightning strike is heated very rapidly and expand, creating a shock wave we hear as thunder. Thunder lasts a few seconds because we first hear the shock wave from the portion of lightning closest to us and then we continue to hear the shock wave from the lightning bolt ...
When water is heated, the air dissolved in water forms bubbles at the bottom of the container. ... Thus, the first contributor to the sound that you hear while boiling water comes from these bubbles, i.e., when they're created at the bottom. ...
The constituents of milk must interact with each other to make the nice, stable liquid that we see and drink, but the way they behave with each other changes when they are heated. Let’s look at what happens when milk is heated through the eyes of one of the proteins. When we boil ...
Copper: Copper is one of Earth's elements. It is identified on the periodic table of elements with the atomic symbol 'Cu' and the atomic number '29.' The word 'copper' is derived from the Latin wordcuprumwhich is why its symbol is 'Cu.' ...