Who is the first scientist of the world? Aristotle is considered by many to be the first scientist, although the term postdates him by more than two millennia. In Greece in the fourth century BC, he pioneered the techniques of logic, observation, inquiry and demonstration. Who was the first true scientist? Isaac Newton is, as […]
What is the most common place for sediment to be deposited?
What is the most common place for sediment to be deposited? Deltas, river banks, and the bottom of waterfalls are common areas where sediment accumulates. Glaciers can freeze sediment and then deposit it elsewhere as the ice carves its way through the landscape or melts. When rock is broken down into smaller and smaller pieces […]
Does light require a medium for transmission?
Does light require a medium for transmission? We know that light doesn’t need a medium through which to travel because the speed of light is experimentally constant: independent of the movement of the source or detector or the direction in which it travels. Light contrasts with sound, which travels through the air (or some other […]
What happens when you add ammonia to red cabbage?
What happens when you add ammonia to red cabbage? Substances such as lemon juice and vinegar turn the cabbage juice red because they are acidic. Ammonia turns the cabbage juice into a blue/green color because it is a base, a material that tastes bitter and makes an acid neutral. Water does nothing, as it is […]
What is the similarities of saturated and supersaturated?
What is the similarities of saturated and supersaturated? The following are the similarities of a saturated and supersaturated solution: In both type of solution, (saturated and unsaturated), additional amount of solute is added to the solvent. What is a saturated and unsaturated solution? A saturated solution is a solution that contains the maximum amount of […]
What is meant by internal energy of a system?
What is meant by internal energy of a system? The internal energy of a thermodynamic system is the energy contained within it. It is the energy necessary to create or prepare the system in any given internal state. The thermodynamic processes that define the internal energy are transfers of matter, or of energy as heat, […]
What is the difference between physical and chemical absorption?
What is the difference between physical and chemical absorption? Physical absorption — A non-reactive process e.g. when oxygen present in air dissolves in water. The process depends on the liquid and the gas, and on physical properties like solubility, temperature and pressure. Chemical absorption — A chemical reaction takes place when the atoms or molecules […]
How bad are welding fumes?
How bad are welding fumes? Prolonged exposure to welding fume may cause lung damage and various types of cancer, including lung, larynx and urinary tract. . Health effects from certain fumes may include metal fume fever, stomach ulcers, kidney damage and nervous system damage. What is welder’s lung? Welder’s lung is a rare occupational disease […]
What soap is pH neutral?
What soap is pH neutral? Mild Dish Soap: pH 7 to 8 (Neutral Cleaner) When it comes to neutrality mild dish soap usually hits the mark perfectly. If your dish soap is labeled mild, gentle, or great for hands, chances are its pH level is somewhere right around 7. This mildness makes dish soap perfect […]