The number of valence electrons for all elements in group 4
What is 4
100
The chemical formula for a hydroxide ion (including charge)
What is OH-
100
The atomic mass of an element that has 17 protons, 17 electrons, and 18 neutrons
What is 35
100
The dude who came up with the number of atoms in 12 grams of carbon
What is Avogadro
200
The explosive element that has one valence electron and 20 neutrons
What is K
200
All elements in this period on the periodic have 4 energy levels
What is 4
200
The charge of a phosphate ion
What is 3-
200
The relative atomic mass has decimals in it because it takes into consideration the proportions of all of the masses of the different forms of element that occur because of a different number of neutrons. These forms are called:
What is isotopes
200
The mass in grams of one mole of any pure substance
What is molar mass
300
An element that gives away 3 electrons and is found in period 3
What is Al
300
The number of valence electrons that all halogens have
What is 7
300
The only positive polyatomic ion (in 10th grade science :-)
What is NH4+ (ammonium)
300
The atomic mass of Newcombium ion. It has 333 protons, 330 electrons, and 33 neutrons (it is an element with lots of energy and very little neutrality.
What is 366
300
What is the molar mass of one mole of oxygen MOLECULES?
What is 32 g
400
An element that has a charge of -2 and a total of 18 electrons when it becomes an ion
What is S
400
Calcium has the tendency to do this to its electrons to achieve a full valence shell
What is give away
400
The number of oxygen atoms in carbonate
What is 3
400
What is the name of the element and the relative atomic mass for the halogen in period 5?
What is Iodine, 126
400
How many oxygen atoms are in 1 mole of CO2?
What is 1.204 x 10^24
500
An alkali earth metal with three energy levels
What is Mg
500
When Mg becomes an ion, how many energy levels does it have?
What is 2
500
The four polyatomic ions that have a 1- charge
What is Nitrate, Chlorate, Hydroxide, Permanganate
500
What is the relative atomic mass of a Chlorine ION?