Chapter 7 Flashcards
(31 cards)
Which is described as the force holding two atoms together?
Chemical bond.
Which is the correct formula for the ionic compound that results from these two atoms ?
X ( two dots ) Y ( five dots )
X 3 Y 2
Which is the charge that results when oxygen becomes an ion?
O -2
Group 13 elements tend to acquire which charge when they form ions?
+3
Which is the correct formula for the compound formed between beryllium and Nitrogen?
Be3N2
Which is the correct formula for the compound Manganese (III) Fluoride
MnF3
Which is the correct formula for the compound Chromium (II) Nitrate ?
Cr(NO3)2
Which is the correct name for the compound Na3P?
Sodium Phosphide.
T/F
A cation is a negatively charged atom.
False.
T/F
In an ionic bond , two cations can bond together to form a compound.
False.
T/F
When an atom gains electrons , it becomes positively charged.
False.
T/F
Phosphide is the name of the anion formed when phosphorus gains three electrons.
True.
T/F
Lithide is the name of the cation formed when lithium loses an electron.
False.
T/F
Metallic elements tend to form cations rather than anions.
True.
T/F
An ionic bond is an electrostatic force that holds together oppositely charged atoms in a compound.
True.
T/F
A crystal lattice is a three - dimensional structure formed by positive ions surrounded by negative ions and negative ions surrounded by positive ions.
True.
T/F
A chemical bond result from the interaction between two nuclei
False.
T/F
The elements, neons, with the electron configuration 1s2 2s2 2p6, will not form a chemical bond with another element, oxygen
True.
T/F
A sodium ion is more stable than a sodium atom.
True.
Magnesium ribbon.
List all the equipment you used and summarize procedure
Equipment : busen burner , clay triangle bowl , magnesium ribbon , and balance.
Procedure : matching the flame first than turned the gas on to create the fire. We than put the Bowl over the clay triangle filled with the magnesium ribbon directly onto the fire causing a white light
Warning : not to touch the clay bowl .
Magnesium ribbon.
Describe what you saw. What was the product formed ? ( give formula and name) . What was happening in the atomic level ( which element was gaining and which was losing)
As the magnesium was burning it became a grayish ash substance. The product formed was MgO , which is Magnesium Oxide . On the atomic level Magnesium was losing two and oxygen was gaining two.
Formula of Beryllium Nitride
Be3N2
Formula of Chromium (I) Carbonate
Cr2(CO3)
Formula of Magnesium Phosphate
Mg3(PO4)2
