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Bonding Quiz Sci 8th

Physical Science Eighth Grade, Quiz on types of molecular bonding

QuestionAnswer
Symbols and subscripts used to show the number of atoms of different elements in a compound are called a ____. chemical formula
Why do atoms form chemical bonds? Atoms gain, lose, or share electrons to have 8 in their outer energy level. (2 for Hydrogen and Helium)
The force that hold atoms together in a compound chemical bond
Atoms with a positive or negative charge ions
The type of molecule formed when electrons do not share electrons equally, so that it has positive and negative ends. polar molecule
Formed by covalent compounds (example: H2O) molecule
Formed by sharing electrons covalent bond
Forms between nonmetals only covalent bond
Formed by transfer of electrons, making positive and negative atoms ionic bond
Form crystals of repeating 3-D patterns between + and – ions ionic bond
Formed by all atoms of the same element metallic bond
How many Hydrogen atoms in NH4OH? 5 (add the 4 from H4, plus the last H)
How many Oxygen atoms in MgSO4 • 7H2O? 11 (There are 7 molecules of water, plus the 4 in the first compound)
How many Nitrogen atoms in Hg(NO3)2? 2 (multiply the N(1) by the subscript 2)
Be able to show ionic and covalent bonds with Lewis electron dot structures. See review sheet and notes!!! Electron dot diagrams should be at the top of each family on your periodic Table!
Created by: judi829
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