Decreasing the temperature reduces the kinetic energy of the molecules involved. This means that fewer molecules have the activation energy required to actually react.
It also means that molecules will collide less often.
Aftershave can turn cloudy due to a variety of reasons such as temperature fluctuations, exposure to air, or the ingredients separating over time. It may not affect the product's effectiveness, but if you're concerned, it's best to discard it and purchase a new one.
When hydrogen burns in air with H2+O2= H20
Yes, some explosives are chemical hazards, but not necessarily because they can explode. To be more clear, the category of "chemical hazard" has no bearing on whether or not something is explosive. That is, a chemical is categorized as a "chemical hazard" for reasons that have nothing to do with its ability to explode.
There are two reasons for using a fuse. First, because of the extremely high temperatures involved, you will need time to get to a safe distance before the reaction starts. Second, thermite has a very high ignition temperature, so an ordinary flame usually can't set it off.
Heating can be due to a chemical change, for example burning a fuel is in effect a chemical reaction with oxygen. Also some chemical reactions are exothermic, ie they produce heat. Not so many produce cooling, but one is the combination of ice and salt.However heating and cooling happen for other reasons as well, so you can't say they are examples of chemical changes. It is correct to say that some chemical changes result in heating and cooling.
The cheaper reagent is usually the reagent that is used in excess. This procedure is purely for economic reasons.
Death and migration are factors that can decrease hare population.
there are many reasons a population or organisms would increase or decrease. some reasons are diseases, predator increase/decrease, good/bad weather, and enough/not enough resource's. :) yep
True. That's one of the reasons you use them.
Global warming. The temperature of the water in a lot of places world wide has increased rendering some species under threat.
Aftershave can turn cloudy due to a variety of reasons such as temperature fluctuations, exposure to air, or the ingredients separating over time. It may not affect the product's effectiveness, but if you're concerned, it's best to discard it and purchase a new one.
The reasons why a test tube is tall and skinny is that if we put a little amount of chemical into it, we are able to see it easily. Another is that we can find how a reaction happens without the reaction spilling all over the place
Immigration, decrease in infant mortality, increase in birth rate, decrease in mortality.
When hydrogen burns in air with H2+O2= H20
what are some of the reasons for a gram-variable reaction
maybe because they are getting smaller
The main reasons for this decrease included an increased use of computers, foreign competition, increased productivity, reduced corporate spending, and U.S. demographic changes.