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General Chemistry placement test Study Guide 2024 Solved 100%
Atomic Number - The number of protons in the nucleus of an atom. The atomic number of an element never changes, meaning that the number of protons in the nucleus of every atom in an element is always the same. Hydrogen = 1, Carbon = 6, Oxygen = 8 (located on top of element of periodic table) Mass Number - # of neurons + # of protons = mass number (located on bottom of periodic table) Isotopes - Let's say an atom is missing a neutron or has an extra neutron. That type of at...
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Atomic Number - The number of protons in the nucleus of an atom. The atomic number of an element never changes, meaning that the number of protons in the nucleus of every atom in an element is always the same. Hydrogen = 1, Carbon = 6, Oxygen = 8 (located on top of element of periodic table) Mass Number - # of neurons + # of protons = mass number (located on bottom of periodic table) Isotopes - Let's say an atom is missing a neutron or has an extra neutron. That type of at...
General Chemistry I Test Bank With A Lot Of Questions Answered Correctly |Graded A+|
A scientific hypothesis is (select one) a) a tentative explanation for a set of observations that can be tested by further experimentation. b) a statement describing a relationship between phenomena that is always the same under the same conditions. c) a unifying principle that explains a body of facts and relations. d) a model used to visualize the invisible. e) all of the above. 3 (2 pts) Complete the following sentence. A scientific law is (select one) a. a tentative explanation for...
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A scientific hypothesis is (select one) a) a tentative explanation for a set of observations that can be tested by further experimentation. b) a statement describing a relationship between phenomena that is always the same under the same conditions. c) a unifying principle that explains a body of facts and relations. d) a model used to visualize the invisible. e) all of the above. 3 (2 pts) Complete the following sentence. A scientific law is (select one) a. a tentative explanation for...