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What is the difference between physical and chemical changes in terms of what happens to the matter involved in each change?
In a physical change, the chemical composition of the substance does not change, it merely changes form. In a chemical change, the chemical formula changes so that fundamental properties such as density and molar mass change.
How do you troubleshoot water hammering within built in home piping systems?
Go to one fixture at a time. Turn hot and cold water on and off quickly. Listen , or have someone listening, for noisy piping in or under walls, floor and ceiling. Can find water hammering problem and fix this way.
Have built or produced something?
Made means to have built of produced something. It is the past tense of make.
Is splitting water through electrolysis into O2 and H2 gasses a physical or chemical change?
In a way it is both physical and chemical, because a chemical change is changing how the molecule is "built," while a physical change is the transformation from one form to the other. I would consider splitting water through electrolysis as a chemical change at first because physical change is keeping the build of a molecule the same while it's form changes. You could also say that the splitting itself occurs first, meaning chemical change first occurs. Physical change would the occur later because the points of physical forms change based on the atom or molecule. The time difference in which occurs first would be very hard to measure, down to nanoseconds, but according to common scientific sense chemical change would occur first. The true answer to this question would be that it is chemical change, because you wanted to know what the splitting part was. Hope this helps!
What have Tunisia and Morocco built up?
chemical industries
What is reconstruction?
something that is re-built
A tea kettle begins to whistle chemical or physical?
When a tea kettle whistles, it is because the liquid inside turns to steam and is forced by pressure through the small opening in the kettle lid. This phase change is a physical change, not a chemical one.
Why steel is used for hammers?
Hammers are typically used to drive in nails. The nails are usually made of steel. If you built your hammer head of some material that was not as hard and durable as steel, it would be destroyed by the process of hammering nails.
What does built mean?
Built means to make somethingCan also mean to construct something
To have built or produced something?
Made means to have built of produced something. It is the past tense of make.
Why were shelters built in World War 2?
Shelters were built in World War 2 as protection against bombs and chemical scares
What is a nine letter word that is something that has been built?
construct - (noun) something constructed
