SCIENCE 101 > EXAM > NLN-PAX science practice| 50 QUESTIONS| WITH COMPLETE SOLUTIONS (All)

NLN-PAX science practice| 50 QUESTIONS| WITH COMPLETE SOLUTIONS

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Atomic Number Correct Answer: the number of protons in the nucleus of an atom Mass number Correct Answer: the sum of the number of neutrons and protons in an atomic nucleus Neutron Correct Ans ... wer: A subatomic particle that has no charge and that is found in the nucleus of an atom Anion Correct Answer: an ion with a negative charge, has more electrons than protons Cations Correct Answer: an ion with a positive charge, has less electrons than protons Proton Correct Answer: a subatomic particle that has a positive charge and that is found in the nucleus of an atom Period Correct Answer: A horizontal row of elements in the periodic table Group Correct Answer: A vertical column on the periodic table Metal Correct Answer: an element that is shiny and that conducts heat and electricity well. Has low electronegativity and low ionization energy. Non-metal Correct Answer: an element that conducts heat and electricity poorly. Has high electronegativity and high ionization energy. Noble Gases Correct Answer: group VIIA, has a full valence shell of 8 electrons, very stable/inert. Halogens Correct Answer: Contains nonmetals, 7 valence electrons in it's outermost energy level. Very reactive Ionic bond Correct Answer: formed when one or more electrons from an atom with a lower level of ionization energy is transferred to an atom with a greater electron affinity. usually between non-metal and metals Covalent bond Correct Answer: When 2 or more atoms with similar electronegativities interact, they achieve a noble gas electron configuration [Show More]

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