Chemistry

Chemistry, 28.07.2019 11:30, kamilagreyes9

1.the protons in the nucleus attract electrons. true false 2.neutrons have a positive charge. true false 3.scientists have discovered over two hundred elements. true false 4.an element is composed of at least two kinds of atoms. true false

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Chemistry, 13.07.2019 14:00, adorsey846

Which is/are true about the atomic particles? [mark all correct answers] a. electrons are negative and repel protons. b. protons are positive and found inside the nucleus. c. neutrons are neutral and reside in the nucleus. d. neutrons and electrons have similar masses. e. protons are bound together by the strong nuclear force. f. electrons are attracted to protons but don't descend into the nucleus. g. electrons are smaller than protons and neutrons. h. a neutral atom has equal numbers of protons and neutrons?

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Physics, 23.07.2019 11:00, jellybellyje

1) the smallest part of an element that behaves like the element is the atom. true false 2) the nucleus contains both protons and electrons. true false 3) protons have a positive charge. true false 4) neutrons have no charge. true false 5) the center of an atom is called a.) nucleus b.) proton c.) electron d.) neutron e.) electron cloud 6) the area where electrons can be found is called the a.) nucleus b.) proton c.) electron d.) neutron e.) electron cloud 7) the particles that give an atom its mass are and a.) nucleus / proton b.) proton / neutron c.) electron / neutron d.) neutron / electron cloud e.) electron cloud / nucleus 8) the particles found in the electron cloud are called select the letter of the correct answer a.) nucleus c.) proton c.) electron d.) neutron e.) electron cloud 9) carbon has how many protons? a.) 12 b.) 2 c.) 6 d.) 4 10) carbon has how many electrons? a.) 8 b.) 10 c.) 6 d.) 3

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Chemistry, 08.10.2019 09:30, kenoknox

Indicate whether each of the following statements is true or false. (a) rutherford's bombardment experiments with metal foil suggested that the alpha particles were being deflected by coming near a large, negatively charged atomic nucleus. true false (b) the proton and the electron have similar masses, but opposite electrical charges. false true (c) most atoms also contain neutrons, which are slightly heavier than protons but carry no charge. false true

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Medicine, 04.11.2019 05:31, rebekahlm

Are the basic units of matter, consisting of smaller particles (protons, neutrons, and electrons). and neutrons reside in the nucleus, which is the central part of the atom. carry a positive charge, and the neutrons are carry a negative charge and they orbit around the nucleus. blank 1 - molecules, atoms, or tissues blank 2 - tissues, electrons, or protons blank 3 - protons, electrons, or neutrons blank 4 - negative, neutral, or positive blank 5 - protons, electrons, or neutrons

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