Why some elements are reactive? The number of electrons in the outermost shell of an atom determines its reactivity. Halogens are highly reactive because they readily gain an electron to fill their outermost shell. Alkali metals are highly reactive because they readily lose the single electron in their outermost shell. Is S or O more […]
What does conductivity depend on?
What does conductivity depend on? What does conductivity depend on? It depends on the concentration, mobility, the valence state of the ionized species in a solution, and the temperature at which a measurement is taken. The higher the concentration of the ions in water, the higher the conductivity. How does thermal conductivity depend on density? […]
Is there a measure of sharpness?
Is there a measure of sharpness? There is no unit of sharpness but instruments are available to measure it. Those instruments provide accurate results with high precision. What is the sharpest knife in the world? Obsidian knife blades: overkill for slicing your sandwich. The thinnest blades are three nanometres wide at the edge – 10 […]
What is difference between mean and median?
Is it bad to be in peak heart rate zone?
Is fuel line measured ID or OD?
Is fuel line measured ID or OD? Tubing is OD (outside diameter) and Pipe is ID (inside diameter). So the easiest way to tell the size of your fuel line, which is tubing, is to use a combination wrench. Whichever one slips over snuggly is the winner. What size is fuel line? Recommended Size, Based […]
What are the 5 steps of fertilization?
What are the 5 steps of fertilization? 5 steps of the in vitro fertilization (IVF) process. Step 1: Medication. Step 2: Harvest the eggs. Step 3: Fertilization. Step 4: Embryo culture. Step 5: Embryo transfer. What are the main results of fertilization? The result of fertilization is a cell (zygote) capable of undergoing cell division […]
Which best describes the difference between radiation and conduction?
Which best describes the difference between radiation and conduction? Convection is the transfer of energy by movement of a medium, whereas radiation is the transfer of energy by, well, thermal radiation. Conduction also requires a medium, but, again, it is a fundamentally different mechanism than either convection or radiation; in this case it is the […]
How do we know the nucleus is positive?
How do we know the nucleus is positive? Rutherford deduced that the atomic nucleus was positively charged because the alpha particles that he fired at the metal foils were positively charged, and like charges repel. In Rutherford’s experiments most of the alpha particles passed straight through the foil without being deflected. Is a nucleus positive? […]
What does the atomic mass tell you?
What does the atomic mass tell you? The atomic mass tells us the weight of protons and neutrons. How do you know how many electrons there are surrounding the nucleus of a particular atom? Why isn’t the atomic mass always a whole number? Atomic mass is never an integer number for several reasons: The atomic […]