This element has 6 protons, 6 electrons, and 4 valence electrons
carbon
100
Na2SlO3(5)+8HF(aq)~HzSiF6(aq)+2NaF(aq)+3HzO(I)
-how many moles are needed to react with .300 mol of Na2SiO3?
2.40 moles
100
NaBr+H3PO4~Na3PO4+HBr
-identify the reaction
double replacement
200
The atomic number of an element is the total number of which particles in the nucleus?
Protons
200
this element is a metal with 28 electrons
nickel
200
this element has 17 protons, 17 electrons and 7 valence electrons
chlorine
200
Na2SlO3(5)+8HF(aq)~H2SiF6(aq)+2NaF(aq)+3H2O(I)
-how many grams of NaF form when .500 mol of HF reacts with excess Na2SiO3?
5.25 g
200
Ca(OH)2+Al2(SO4)3~CaSO4+Al(OH)3
-identify the type of reaction
double displacement
300
The number 7 in the name lithium-7 represents
the mass number
300
this element is a gas with 8 protons
oxygen
300
two non metals
covalent
300
C6H12O6(aq)-72C~HsOH(aq)+2CO2(g)
-how many moles of CO2 are produced when .400 mol of C6H12O6 reacts
.800 mol
300
Mg+Fe2O3~Fe+MgO
-identify the reaction
single displacement
400
Isotopes of the same element have different...
numbers of neutrons
400
this element is used inside of a pencil
lead
400
one metal, one non metal
ionic
400
C6H12O6(aq)-72C~HsOH(aq)+2CO2(g)
-how many grams of C6H12O6 are needed to form 7.50 of C2H5OH?
14.70
400
C2H4O2~CO2+H2O
-identify the type of reaction
combustion
500
How is the number of neutrons in the nucleus of an atom calculated?
subtract the number of protons from mass number
500
A gas with a mass number of 19
fluorine
500
SiF4
Silicon Tetrafluoride
500
2NaOH+H2SO4~2H2O+Na2SO4
-how many grams of sodium sulfates will be formed if you start with 200 grams of sodium hydroxide and you have an excess of sulfuric acid?