Classifying reactions as endothermic or exothermic depends on the comparison of energy required to break bonds in the reactants and energy released when new bonds are formed in products. Bond formation generally releases energy and is exothermic, while bond breaking absorbs energy and is endothermic. Therefore, reactions which make more or stronger bonds (AB+C-->AC+B, A2+C2-->2AC, A2+B2-->2AB) are likely exothermic, whilst those breaking more or stronger bonds (B2+C2-->2BC, A+BC-->AB+C) are likely endothermic.
Chemical reactions can be classified as endothermic if energy (usually in the form of heat) is absorbed from the surroundings, or exothermic if energy is released into the surroundings. The key here lies in understanding the concept of bond energy. Essentially, if more energy is required to break the bonds in the reactants than is released when new bonds are formed in the products, the reaction is endothermic. Conversely, a reaction is exothermic if less energy is required to break the bonds in the reactants than is released when new bonds are formed in the products.
Without exact bond energies, we can only hypothesize about the reactions. However, the general rule is that bond formation is exothermic while bond breaking is endothermic. Therefore, any reaction that results in the formation of more or stronger bonds than it breaks would likely be an exothermic reaction (AB+C-->AC+B, A2+C2-->2AC, A2+B2-->2AB). On the other hand, a reaction that requires breaking more or stronger bonds than it forms (B2+C2-->2BC, A+BC-->AB+C) would likely be endothermic.
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Explanation:
The amount of matter contained inside a body is called its mass while the weight of a body is the gravitational force with which it is attracted towards the earth.
Weight, W = mg
m is the mass and g is acceleration due to gravity
The mass of the object on the moon remains the same but the weight of the body is reduced to one sixth. This is because the moon's gravity is less than the earth's gravity.
Hence, this is the main difference in the weight of the object on the earth and on the moon.
Answer:
the answer on edge is 48
Explanation:
Answer:
Explanation:
F = m*a = 50 * 4 = 200 N
B) The alpha particle will reverse its direction.
C) The alpha particle will be deflected in a curve path.
Eliminate
D) The alpha particle will continue to travel in a straight line.
Answer: C) The alpha particle will be deflected in a curve path.
Explanation:
Alpha particle carries +2 charge. It is a Helium ion: He⁺²
When any charged particle enters a magnetic field, it experiences a magnetic force perpendicular to direction of the velocity of the particle and the direction of the magnetic field. Thus, the alpha particle moves in a circular path.
Hence, the correct answer is: The result of an alpha particle coming into a magnetic field is C) The alpha particle will be deflected in a curve path.