Why is hydrogen placed in Group 1 and not 17? Hydrogen is placed above group in the periodic table because it has ns1 electron configuration like the alkali metals. However, it varies greatly from the alkali metals as it forms cations (H+) more reluctantly than the other alkali metals. Hydrogen has a much smaller electron […]
Which amino acid is involved in the formation of disulfide bonds?
Which amino acid is involved in the formation of disulfide bonds? The cysteine amino acid group is the only amino acid capable of forming disulfide bonds, and thus can only do so with other cysteine groups. What two functional groups are found in amino acids? Carboxyl and amino groups are always found in amino acids. […]
Where is the thickest loess deposits found?
Where is the thickest loess deposits found? Extensive loess deposits are found in northern China, the Great Plains of North America, central Europe, and parts of Russia and Kazakhstan. The thickest loess deposits are near the Missouri River in the U.S. state of Iowa and along the Yellow River in China. Is Loess erosional or […]
Can sound waves bend?
Can sound waves bend? Sound waves do, indeed, bend. In an underwater thermal gradient the sonar waves can bend enough to create blind spots, so that you can not “see” a target that would ordinarily be well within sonar range. The other example is the difference in how well sound carries up/down wind. What is […]
What is the two main function of a diode?
What is the two main function of a diode? Main functions The most common function of a diode is to allow an electric current to pass in one direction (called the diode’s forward direction), while blocking it in the opposite direction (the reverse direction). As such, the diode can be viewed as an electronic version […]
How can we conserve water in our school?
How can we conserve water in our school? How can students save water at school? Simple Actions = Big Water Savings​ Carry a refillable water bottle. Skip the tray in the lunch line and use only one plate. Turn off the water when washing your hands. Report leaks to the appropriate authorities. In labs and […]
Why are batteries called AA?
Why are batteries called AA? But the most significant difference is size because batteries are called AA & AAA because of their size and dimension. AA doesn’t stand for anything. It is simply an identifier for a battery of given dimensions and nominal voltage. Are C batteries the same as AA? AA batteries are the […]
What is a solubility graph?
What is a solubility graph? A solubility graph is drawn to display the solubility at different temperatures. From reading a solubility graph, one can determine the mass of solute that can dissolve at specific temperatures, whether or not a solution is saturated, and compare solubilities of different substances at specific temperatures. Which of the following […]
What is the most important muscle?
What is the most important muscle? The human heart is the most incredible muscle in the body, beating about 100,000 times to send 3,600 gallons of blood through 75,000 miles of blood vessels each day. Sure, skeletal muscles are vital to our ability to function, but the heart is truly a step above. What muscle […]
Why does the mass change?
Why does the mass change? The mass of an object does not change with speed; it changes only if we cut off or add a piece to the object. Since mass doesn’t change, when the kinetic energy of an object changes, its speed must be changing. Special Relativity (one of Einstein’s 1905 theories) deals with […]