Identify the Reactants and Products of 2Fe + 3O2 2Fe2O3
Fe and O2 are reactants and Fe2O3 is the product.
100
Identify the type of reaction: N2 + H2--> NH3
Combination
100
Determine the Formula for barium phosphate?
Ba3 ( PO4)2 , Ba has two valence electrons & that of PO4 is three
100
Name the following ionic compound: NiCl3.
you “criss-cross” the subscript back up to find the original ionic charges and end up with Nickel(III) chloride.
100
Convert 2.3 mol hydrogen gas into liters.
2.3 mol H2 x 22.4 L H2 / 1 mol = 51.52 L H2
200
What is the Element Symbol for Iron?
Fe
200
Identify the Type of Reaction: H2O-->2H2 + O2
Decomposition ( Product is being broken down)
200
Which has a larger atomic radius, Carbon or Titanium?
Titanium as its position on the periodic table lies lower and further to the left than that of Carbon.
200
Name the following compound: Na2SO4.
Sodium sulfate
200
Convert 5.631 x 1021 atoms Na to grams
5.631 x 1021 atoms Na x 1 mol Na / 6.02 x 1023 atoms Na x 22.99 g Na / 1 mol Na=.215 g Na.
300
What is the Atomic Number for Hydrogen?
1
300
How many sig figs are in this number: 12,500?
3 sig figs
300
How many valence electrons does Hydrogen have?
1 valence electron
300
Fluorine, 9 protons, 9 electrons, and 10 neutrons.Which atom has an atomic number of 9 and a mass number of 19? How many protons neutrons, and electrons does it have?
Fluorine, 9 protons, 9 electrons, and 10 neutrons.
300
Convert 2.63 L O2 to grams.
2.63 L O2 x 1 mol O2 / 22.4 L O2 x 32.00 g O2 / 1 mol O2 = 3.76 g O2
400
What is the Atomic number for K?
19
400
Who Conducted the Golden Foil Experiment?
Rutherford
400
What would be the result of Beta decay of Carbon-14?
2.63 L O2 x 1 mol O2 / 22.4 L O2 x 32.00 g O2 / 1 mol O2 = 3.76 g O2
0.53 L NO2 x 1 mol NO2 / 22.4 L NO2 = 0.024 mol NO2.
500
What is the Symbol for Magnesium?
Mg
500
What is the definition of a mixture?
A physical combination of two or more substances.
500
How many sublevels are present in Oxygen?
three sublevels, 1s, 2s, and 2p
500
Balance the following reaction: __Al + __CaS __Al2S3 + __Ca.
2,3,1, and 3
500
16.23 mol O2 x 2 mol H2O / 3 mol O2 = 10.82 mol H2O Given 2H2S + 3O2 2SO2 + 2H2O, how many moles of water will be produced if 16.23 moles of oxygen is used?