The nucleus of an atom is all of these EXCEPT: a) dense b) positive c) quantized

Question

The nucleus of an atom is all of these EXCEPT: a) dense b) positive c) quantized d) small Around 1911 Rutherford proposed that: a) the atom is a plain solid ball. b) the atom is a plain solid ball c) electrons are only in certain orbits d) most of an atom's mass is located in a small dense nucleus Thomson's contribution (1900) to the model of the atom was: a) the idea of positive and negative charges in the atom b) the idea of a nucleus c) the idea the atom can't be measured without disturbing it d) the idea that the energy of the electron is conserved Which set of compounds illustrates the Law of Multiple Proportions? a) NO, NH_3, NH_4CI b) SO_2, SO_3 c) H_2, O, H_2 d) all of these The ancient (around 400 BC) Greeks: a) did experiments b) put the cements in order c) debated whether atoms whether atoms existed or not d) wrote in code What is NOT true of alchemists? They: a) wrote in code b) tried to change cheap metals into gold c) did experiments d) believed matter was made of atoms The term that means "only certain values are allowed/possible" is: a) continuous b) controlled c) quantized d) thermal Schrodinger's contribution to the theory of the atom (1927) included. a) calculations about how to split the atom b) calculations of exactly where the electrons are at any given time c) the idea that electrons can only be in certain orbits d) the idea that orbitals can have various shapes Dalton stated all the following about the atom except. a) All atoms of an element are alike. b) Compounds are formed by a combination of two or more different kinds of atoms c) For each compound, different elements combine in a simple whole-number ratio d) In a neutral atom the number of protons and electrons are equal. The attraction between positive and negative ions is known as: a) covalent bonds b) crystal bonds c) ionic bonds d) molecular bonds The bonds in N N are a) covalent b) crystalline c) ionic d) gaseous

Explanation / Answer

13. The answer is Quantized. because nuclei of an atom is small, dense and has the protons and neutrons which are possitivly charged so the nuclei is possitive also.

14 The answer is d. Mass of the most of the atom is located in small dense nucleus.

15 The answer is A. The idea of possitive and negative charges of atom

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