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Ch.11 Quiz Science
| Question | Answer |
|---|---|
| what does the periodic table organize | elements |
| Each block in the periodic table describes basic ____ of one element | properties |
| The periodic table lists the elements in order by their ____ | atomic number |
| Elements in groups have similar ____ properties | physical |
| are on the left side of the periodic table | metals |
| are on the right side of the periodic table | non-metals |
| located on the narrow stair step region between the metals and non metals | metalloids |
| most of the matter around you is made of _____ that include two or more different elements. | compounds |
| is a force that holds atoms together | a chemical bond |
| atoms contain __ with positive charge, ___ with neutral charge, and ____ with negative charge. | protons, neutrons, electrons |
| atomic particles that participate in chemical bonding | valence electrons |
| electrons closest to the nucleus have the ____ energy and those farthest have the ___ energy. | lowest, and highest |
| The maximum number of electrons in the first energy level, which is closest to the nucleus, is __. The maximum number of electrons in the second energy level is ___. | two,eight |
| The ____ electrons in an atom are involved in chemical bonding. These electrons are less strongly attached to the _____ | valence /outermost, nucleus |
| an outermost electron that participates in chemical bonding | valence electron |
| The number of valence electrons in an atom tells you how many __ an atom can form. | bonds |
| Each element in the same __ in the periodic tale has the same # of valence electrons | group |
| The _____ is a model that represents valence electrons in an atom as dots around the elements chemical symbol | electron dot diagram |
| To create an electron dot diagram, draw one dot for each electron in the atom, placing one dot on each of the ____ sides of the symbol and then pairing additional dots. | four |
| The number of ___ dots in the electron dot diagram tells you how many bonds an atom can form. | unpaired |
| 6. Many atoms are stable with __ valence electrons. An atom with at least one unpaired electron is __ | eight, reactive |
| ___ atoms do not easily react with or form bonds with other atoms. | stable |
| b. Group 18 includes the ____ with the exception of helium each of these gases have eight valence electrons and are stable. | noble gases |
| stable atoms have ___ valence electrons | four |
| unstable atoms can become stable only by forming __ with other atoms. | bonds |
| atoms tend to gain lose or share valence electrons until each atom has the same number of valence electrons as the noble ___ | gasses |
| is an atom that is no longer electrically neutral because it has lost or gained valence electrons atoms of 2 or more nonmetals form compounds by sharing valence electrons | ion |
| - ___ and __ do not share electrons | metal, nonmetal |
| metal atoms, become more stable when they ___ valence electrons | lose |
| ___ can gain valence electrons from metal atoms | non-metal atoms |
| non metal atoms can _ valence electrons with other non metals | share |
| ionic bond elements far away from each other from ___. | left to right. |
| ionic bond-attraction between positively and negatively charged ions and ____ | ionic compounds |
| metals ___ valence electrons, non-metals ___ valence electrons. | lose, gain |
| nonmetal atoms gain electrons lost by metal atom. | chemical bond |
| solid and brittle at room temp., high melting and boiling points, dissolve in water and have good conductivity. (ion-ion) | ionic compounds |
| many metal atoms share their pooled valence electrons | metallic bond |
| metal atoms form compounds bu combining with another which is known as ____ | pooling |
| valence electrons in metals aren't bonded to j. one _____ surrounds the positive ions | sea of electrons |
Created by:
Sofi_Penailillo
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