Is electricity the movement of electrons?

Is electricity the movement of electrons? Electricity is the movement of electrons between atoms. Why do electrons move from negative to positive? A: Electrons are negatively charged, and so are attracted to the positive end of a battery and repelled by the negative end. So when the battery is hooked up to something that lets […]

What is meant by Vsepr theory?

What is meant by Vsepr theory? The VSEPR theory assumes that each atom in a molecule will achieve a geometry that minimizes the repulsion between electrons in the valence shell of that atom. Repulsion between these pairs of electrons can be minimized by arranging them so that they point in opposite directions. Why is Vsepr […]

What are the mixtures that Cannot be separated?

What are the mixtures that Cannot be separated? An element is a pure substance that cannot be separated into simpler substances by chemical or physical means. There are about 117 elements. What jobs use separation techniques? Familiar professions that use separation techniques Chefs – decanting, sieving, filtering. Dentists – safe disposal of mercury fillings (filtering). […]

Is 25 miles per hour wind fast?

Is 25 miles per hour wind fast? – at 19 to 24 mph, smaller trees begin to sway. – at 25 to 31 mph, large branches will be in motion, whistling will be heard in overhead wires, and umbrella use becomes difficult if not impossible. – at 32 to 38 mph, whole trees will be […]

What is the formula of starch?

What is the formula of starch? The basic chemical formula of the starch molecule is (C6H10O5)n. Starch is a polysaccharide comprising glucose monomers joined in α 1,4 linkages. The simplest form of starch is the linear polymer amylose; amylopectin is the branched form. What is the structure and function of starch? Starch is the form […]

What holds a nucleus together?

What holds a nucleus together? The strong nuclear force. At extremely short range, it is stronger than electrostatic repulsion, and allows protons to stick together in a nucleus even though their charges repel each other. Remember that the size of the nucleus is really small compared to the size of an atom. What makes a […]

What is the relation between the force and acceleration?

What is the relation between the force and acceleration? Newton’s second law of motion describes the relationship between force and acceleration. They are directly proportional. If you increase the force applied to an object, the acceleration of that object increases by the same factor. In short, force equals mass times acceleration. Can car move in […]

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