These are the two most common, general types of bonds.
What are ionic bonds and covalent bonds?
100
Name one of the noble gasses
What are He, Ne, Ar, Kr, Xe, Rn
100
Electrons have _________ charge, protons have _________ charge, and neutrons have __________ charge.
What are negative, positive and neutral (or no) in that order
100
This is the most reactive of all the elements.
What is Flourine?
100
This is the symbol to show an electron.
What is e-
200
An ionic bond is a bond between a __________ and a ___________ .
What are a metal and a non-metal OR a cation and an anion.
200
Name at least 3 of the different sections, or 'families' on the periodic table.
What are non-metals, transition metals, halogens, alkali metals, alkaline earth metals, lanthanoids, actinoids, poor metals, metalloids, nobel gasses.
200
How can you know how many protons are in an atom of a given element?
It is the same as the atomic number of that element.
200
Name an element that has just one valence electron.
What are H, Li, Na, K, Rb, Cs, Fr.
200
Draw an electron dot diagram for Calcium.
What is .Ca.
300
This is a bond in which electrons are shared equally between two atoms.
What is a non-polar covalent bond.
300
If an element is period (row) 3, we also know that this element has 3 ______________.
What is orbitals, energy levels or electron shells.
300
These are the most 'important' electrons for determining whether or not an element will bond, located in the outermost energy level (or orbital) of an atom.
What are valence electrons?
300
Besides helium, all of the noble gasses have _____ electrons in their valence shell. Bonus: Helium has _______.
What is 8? Helium has 2.
300
U-238 and U-235 are two different ____________ of the same element, and the element is _______________.
Isotopes
Uranium
400
This is why oil does not bond with, dissolve, or even mix, with water.
What is that polar dissolves polar, and non-polar dissolves non-polar, but polar and non-polar molecules do not mix: water is polar, oil is non-polar. Water would rather hang with itself than oil. Oil has no partial charge, so it's not 'attractive' to water.
400
Elements in this group can form either a positive OR a negative ion.
What is group 14?
400
Choose a molecule that has very different properties from the individual elements that make it up. One chemical difference between the molecule and one of its elements is ________. One physical difference is _________.
Ms. Nelson will judge your answer for this. Example: Water. H2O is not flammable, H and O are. H2O is a liquid at room temp, H and O are gasses.
400
_________ is the charge of an oxide ion, because _________________.
What is -2 because it has gained two extra electrons to fill it's valence shell.
400
Balance this equation:
___SnO2 + _____ H2 --> ____ Sn + ____ H2O
What is 1, 2, --> 1, 2
500
Use Coulomb's Law to determine which of the following would have the STRONGEST bond: LiCl , NaCl, KF, CO
What is LiCl
500
As you move right to left on the periodic table, electronegativity (or how desperately atoms want electrons) (increases/decreases), and as you move down on the periodic table electronegativity (increases/decreases).
What are increases and decreases, in that order.
500
If Carbon were to bond with Flourine, what would be the formula for the resulting compound?
CF4 (Carbon tetraflouride)
500
Name an element that can form multiple different ions.
What are any of the transition metals or those in group 14.
500
Balance the following equation, and then answer the question:
___NH3 + ____ O2 ---> ___NO + ___ H2O
How many NH3 molecules are must be present in order for this reaction to take place?