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Atoms and Bonding

QuestionAnswer
compared to molecular compounds, ionic compounds have ____ melting points high
ionic compounds conduct electric currents when ___ when they are melted or dissolved in water.
an electron dot diagram shows an atom's number of valence electrons
when atoms react, they form a chemical bond, which is defined as the force of attraction that holds atoms together.
which element, of calcium, argon, sodium, nitrogen, oxygen, and chlorine, can be stable by losing 1 valence electron? sodium because it's in group 1 of the periodic table.
which element, Vof calcium, argon, sodium, nitrogen, oxygen, and chlorine, is the least likely to react with other elements? argon, because its in group 8, which means it already has all of its valence electrons.
when an atom loses or gains electrons, it becomes an ion.
magnesium chloride is an example of on ionic compound, which is a compound of composed of positive and negative ions.
which of these compounds in not likely to be an ionic compound: Potassium Bromide, (KBr), Sulfur Oxide (SO2), or Aluminum Chloride (AlCl3)? sulfur oxide because they're both non-metals.
what is the formula for calcium oxide, aluminum iodine, rubidium sulfide, and aluminum oxide. CaO, AlI3, RbS, Al2O3
a covalent bond in which elements are shared equally non polar bond
the formulas N2, H2O, and CO2 all represent molecules called covalent bond
how many valence electrons does a carbon atom have? 4 valence electrons
identify oxygen (O2) and carbon dioxide (CO2) as a polar or nonpolar molecule. the are both nonpolar because they both sharing their electrons.
the metal atoms in iron are held together by metallic bonds
an ice cube and a scoop of table salt are left outside on a hot, sunny day. why does the ice cube melt and the salt does not. an ice cube doesn't have as strong of a bond as salt.
how many sodium ions (1+) are needed to balance out the charge of 1 phosphate ions (3-)? 3
the subscripts in the chemical formula are C6H12O6 represent? the number of atoms of each element in a formula.
elements that have the same number of valence electrons are within the same group of the periodic table.
when an atom loses an electron it becomes a positive ion.
what are the three characteristics the result from metallic bonding. the ability to conduct heat, luster, and the ability to be hammered in to thin sheets.
what are the chemical formulas for magnesium fluoride, and aluminum sulfide? MgF2, Al2S3
why can't potassium and neon form a compound? because neon already has all eight of its electrons.
compared to ionic compounds, molecular compounds generally have low boiling point
compared to ionic compounds, molecular compounds generally have poor conductivity.
if a molecule contains polar bonds, the molecule may or may not be polar overall. true
compare and contrast oxygen and fluorine. both are covalent bonds. oxygen is a double bond, fluorine is a single bond.
Created by: cbra9
 

 



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