Which statement best describes what occurs during a chemical reaction? During a chemical reaction both the identity and the properties of a substance change. Chemical reaction between two substances occurs to form a new substance which is completely different. Therefore, it has different appearance and physical state as well as the chemical properties. Which statement […]
Is it bad to be in peak heart rate zone?
Why some elements are reactive?
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 […]
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 […]
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 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? […]
What are 2 types of speed?
What are 2 types of speed? There are two types of speed: result-speed and task-speed. What are 3 types of speed? In general, there are three types of speed limits: absolute, presumed and basic. What are 4 types of speed limits? In California, there are four major Speed Laws: Basic, Prima Facie, Maximum, and Minimum. […]
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 […]