Show:
Predicting Charges
Chemical Formulas
Polyatomic Ions
Chemical Names
Rainbow
100
When an element loses an electron, it becomes a ________.
cation
100
Write the chemical formula resulting from a reaction between sodium and phosphorus.
Na3P
100
Name the only positive polyatomic ion.
Ammonium
100
Name the compound KNO3.
potassium nitrate
100
Are chemically stable atoms more or less likely to react?
Less
200
An element found in Group 14 would likely have ______ valence electrons.
4
200
Write the chemical formula of the ionic compound resulting from the reaction of silver and oxygen.
Ag2O
200
Name the polyatomic ion with a 3- charge.
Phosphate
200
Name the compound AgCl.
silver chloride
200
If hydrogen forms a positive ion, H+, how many electrons will it have?
0
300
If element X formed the compound XCl2, to which group would X likely belong?
Group 2
300
Which group forms a compound with chlorine with the general formula MCl2?
Group 2
300
Name the polyatomic ion that only contains one ELEMENT.
peroxide
300
Name the compound FeCl2.
iron(II)chloride
300
If an atom has 8 protons, 8 neutrons, and 10 electrons, what charge does it possess?
2 -
400
If an element, X, can form an oxide that has the formula X2O3, then element X would most likely be located in which Group?
Group 13(3A)
400
Which group forms a compound with sulfur with the general formula M2S3?
Group 13(3)
400
Which four polyatomic ions have exactly four oxygen atoms?
phosphate, sulfate, permanganate, chromate
400
Name the compound NH4NO2
ammonium nitrite
400
Why do elements in the same group have similar properties?
They have the same number of valence electrons
500
What is the most likely charge for an ion with the following ionization energies? 1st IE=500 2nd IE=5,000 3rd IE=7,000 4th IE=9,000 5th IE=13,000
+1
500
In the formula X2(SO4), the X represents a metal. To which group does this metal belong?
Group 1
500
Which polyatomic ion has the most oxygen atoms?
dichromate
500
Name the compound Sr(MnO4)2.
strontium permanganate
500
Why is Ba2O2 incorrect? Write the correct formula.
Chemical formulas must be simplified to the lowest possible ratio (BaO).