Which subatomic particle(s) are involved in chemical bonding?
Electrons
100
NaCl consists of which two elements and what is the chemical name?
Sodium and Chlorine, Sodium Chloride
100
What is the first step in writing a chemical name when you know the chemical formula?
Identify whether the compound is covalent or ionic.
100
What do you do with chemists that passed away?
Barium
200
True or False: Table Sugar is made up of carbon, hydrogen, and oxygen. Because table sugar is sweet, the elements making it up must have similar properties.
False. When atoms of one element join with atoms of another to form compounds, these substances are quite different from either element.
200
True or false: A chemical bond between two non-metal ion transfers electrons to complete their valence shell.
False. They share electrons, not transfer.
200
A multivalent metal has how many different ion charges?
2 or more
200
How many atoms are in N2Cl2?
4
300
Element Stanlium (Sa) a is noble gas. How many electrons are missing from the valence shell of a Sa atom?
None. Noble gas atoms have full valence shells.
300
List at least 3 properties of an ionic compound.
Any of the following:
- Ionic compounds form crystals.
- Ionic compounds have high melting points.
- Ionic compounds are very hard and brittle.
- Ionic compounds conduct electricity when dissolved in water.
300
Write the chemical formula for (NH4)2S
Ammonium Sulfide
300
Identify all the problems in this chemical name: Zinc Dichlorine
It is an ionic compound and not a molecular compound, and therefore does not require any prefixes. Also, the second element does not end with "-ide".
400
What is wrong with this statement: The Lithium atom gave an electron to Germanium, and became a stable ion.
Both Lithium and Germanium are metals.
In order to become an ion, Lithium has to come in contact with another atom that needs to gain an electron.
400
Name the diatomic molecules found in the wild, and define the word.
Write the chemical formula for tetraphosphorus decaoxide.
P3O10
500
How many shells are there not counting the valence shell in an ion of Calcium?
2. In an ion of a metal, you will want to give away electrons to be like the nearest noble gas. In this case, Argon is the nearest noble gas and only has 3 shells, the outermost being a full valence shell.
500
Explain why molecular compounds are poor conductors of electricity.
Molecular compounds do not separate to form ions. The molecules are separated from each other but each individual molecule stays intact with a neutral charge. As a result, molecular compounds are poor conductors of electricity when dissolved in water.
500
Assume Element "St" (Stanleynium). What is the chemical formula for Stanleynium (III) Sulfite, an ionic compound?
St2(SO3)3
500
Name the prefixes used in naming molecular compounds for 1-10 in order.