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Name two ways in which elements can combine into compounds. Ionic and Covalent.
How are atoms connected to each other in covalent compounds? They share electrons and form molecules.
Give one example of a covalent compound. H20.
Give one example of an ionic compound. Sodium Boride.
What needs to happen to atoms of different elements to allow them to form an ionic compounds. They have to gain or lose electrons.
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What is the meaning of the “poly-” in the term “polyatomic ion”? Multiple, more then one.
How are atoms in a polyatomic ion connected together? Covalent bonds.
What kind of bond can a polyatomic ion form in a compound? An ionic bond.
Give the name and formula of the polyatomic ion used in some roadside-check equipment that tests for alcohol on drivers’ breath. Potassium dichromate.
Give one example of how the polyatomic ion ammonium is used? For fertilizer.
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Aluminum Iodide
C) Magnesium Phosphide
Calcium Selenide
Potassium Sulfide
Rubidium Fluoride
Silver Nitride
Potassium Bromide
Strontium Phosphide
Calcium Sulfide
Silver Oxide
Cesium Sulfide
Calcium Iodide
Sodium Fluoride
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LiCl
C)NaS2
Al3O2
2
LiF
Mg2Cl
LI2O
Ba3P2
Rb2P
Cs2S
N)CaO
Page 89
CrCl2
Cu2S
E) Fe3P2
MnO
HgBr2
K)SnN how does this one work?
N) PbCl4
