【题目】Water can be a liquid, a solid or a gas.When it is a solid, it may be as hard as rock.When it is a liquid, you can pour it out of a bottle. When it is a gas, you cannot see or pr feel it.Water can change from one form to another easily. When we freeze wat...
D Antifreeze is a liquid(液体) that is added to water to keep it from freezing. When water freezes and turns to ice, it expands(膨胀). The force of water expanding is so great that it will break the hardest metal. Water is used in car engines(发动机) to keep them cool while they ...
PREPARATION OF POROUS THIN FILM FOR PROMOTING FOAMING OF CARBONATED DRINKS OR AVOIDING SUDDEN BOIL WHEN LIQUID BOILS, AND CONTAINER WITH POROUS THIN FILMPROBLEM TO BE SOLVED: To provide sustainable foaming of carbon dioxide which is supersatu rated carbonated drinks by fitting glass powder inside of...
A liquid absorbs heat when it changes into a gas and releases heat when it changes into a solid. When a liquid changes into a gas the phase change is...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Ou...
Then add the liquid pectin, return the mixture to a full rolling boil and boil for 1 minute. Does pectin make you poop? As a soluble fiber with unique gelling properties, pectin aids digestion in many ways. Soluble fibers turn into gel in your digestive tract in the presence of water. ...
Antifreeze is a liquid(液体) that is added to water to keep it from freezing.When water freezes and turns to ice,it expands(膨胀).The force of water expanding is so great that it will break the hardest metal.Water is used in car engines(发动机) to keep them cool while they run,and ...
When it is a liquid, you can pour it out of a bottl e. When it is a gas, you cannot s e e or pr feel it.Water can chang e from on e form to anoth er easily. When w e freez e water, it turns into ic e. When w e boil water, it turns into stea m.When ic e mel...
For a particular liquid, raising its temperature from 339 K to 365 K causes its vapor pressure to double. What is the enthalpy of vaporization of this liquid? Why does a compound with a high vapor pressure boil at a lower temperature than a compound with a lower vapor press...
Why does a hot air balloon rise when it is heated? Why can't cold air hold much water vapor? Why does raising the temperature cause a liquid to boil? Why does decreasing the temperature of a liquid make it freeze? Why do liquids evaporate at different rates?
当水结成冰的时候，它会膨胀。水膨胀的力很大，可以把最硬的金属涨破。这就是为什么在冬天汽车的引擎中加防冻液的原因。小题1:细节理解题。根据文章第一段三，四两行可知。小题2:细节理解题。根据文章第一段倒数第三行，四行可知。小题3:细节理解题。根据文章第一段倒数一二两行可知。小题4:细节...