(3xPts)Who is the greatest chemistry teacher in the world.
Mrs. Nizio :)
100
What is the subatomic particle with a negative charge?
Electrons
100
What are the 3 types of bonds?
(2xPts) What is the 4th one?!?!?
ionic
covalent
metallic
(2x)Polar
100
What is sodium bromoxide?
NaBrO is an ionic bond.
200
What is the number below the element's symbol?
the atomic mass
200
What is Dalton' Theory
that an element is composed of one atom, and that a compound is composed of particles that chemical combinations of different kinds of atoms.
200
What is a valence electron?
the number of electrons on the outermost shell of electrons.
200
What is an example of an ionic bond?
If one element is a metal and the other is a nonmetal then yes. -in that order-
200
What is the electron configuration of nitrogen?
1s^2 2s^2 2p^3
300
What are the three classes that elements can divided in?
metals, metalloids, and nonmetals
300
What is the name of the father of the periodic table.
Democritus Mendeleev
300
What is another word for a group on the periodic table?
Family
300
What is the meaning of the prefix hepta- in a compound
7
300
(2xPts)What is the meaning of △, delta in balancing equations?
it that there is heat involved.
400
What is one of the metalloids in the periodic table?
What is one of the metalloids in the periodic table?
Helium Carbon Nitrogen Oxygen Flourine Neon Phosphurous Sulfur Chlorine Argon Selenium Bromine Krypton Iodine Xenon Radon
400
Who is Niels Bohr?
He is the one who discovered that the electrons orbit around the nucleus.
400
What is a period?
A horizontal row of elements
400
What is one example of a covalent bond?
If they are 2 nonmetals then yes.
400
What are the elements of BRINCLHOF?
-hint: BrINClHOF-
Bromine, Iodine, Nitrogen, Chlorine, Hydrogen, Oxygen, and Flourine.
500
(2xPts) What is the one transition metal that is human made?
Technetium
500
What is the name of the father of moles?
Avogadro
500
What is a catalyst?
a substance that increases the rate of reaction by lowering the activation-energy barrier; thus the catalyst is not used up