The Atom
What is the neutron?
This is the scientist who organized the first periodic table.
Who is Dmitri Mendeleev?
These are the chemicals to the left of the '->' in a reaction.
What are reactants?
This is the type of nuclear decay that can increase atomic number.
What is beta decay?
This is the density of an object occupying 3 L with a mass of 9.5 kg.
What is 3.2 kg/L?
This part of the atom does not significantly contribute to the atomic mass.
What is the electron?
This is a name for group 1 of the periodic table.
What is an alkali metal?
This is the reaction type of:
MgS + 2K -> K_2S + MgWhat is a single displacement reaction?
This is the amount of a 1500 g sample after two half-lives.
What is 375 g?
This is the charge of an atom with 2 electrons removed.
What is +2?
This is the number of neutrons in an atom of Phosphorus-31.
What is 16?
This is the group number for the halogens.
What is 17?
These are the coefficients in order needed to balance the reaction:
H_2(SO_4)+ LiOH -> H_2O + Li_2(SO_4)
What is: 1,2,2,1?
This is the product isotope of the alpha decay of Bromine-82.
What is Arsenic-78?
This is the region above a substances' curve on a solubility diagram.
What is supersaturated?
This is the most likely charge of an oxygen ion.
What is -2?
This is the corner of the periodic table with the larges atomic radius.
What is the bottom left?
These are the (written) names of the likely products of the neutralization of:
NaOH + HNO_3 ->
What are water & sodium nitrate?
This is the half-life of a sample that goes from a mass of 2500 g to a mass of 312.5 g in 1500 years.
What is 500 years?
This is the phase change that occurs when a solid turns into a gas.
What is sublimation?
This is the number of valance electrons in a neutral bromine atom.
What is 7?
These are five groupings on the periodic table that beryllium belongs to (each correct is worth+100, each incorrect -100)
What are:
Alkaline Earth Metals
Metals
Representative/Main group
Group 2
Period 2
This is the balanced chemical reaction that would produce potassium phosphate as a salt.
What is:
H_3(PO_4) + 3KOH -> 3H_2O + K_3(PO_4)
Bismuth-210 undergoes alpha decay, then that product undergoes beta decay, this is the product of that double nuclear decay.
This is a description of how determine if a fluid is a solution, suspension, or colloid.
What is the tyndell effect (solutions are negative) & settling (suspensions settle)?