Periodic Table of the Elements
What is the atomic number of Oxygen?
8
What are the three subatomic particles and their charges?
proton - positive, electron - negative, neutron - neutral
What is the charge of an atom with 3 protons, 2 neutrons, and 1 electron?
+2
How many valence electrons does sodium (Na) have?
1
What is/are the product(s) of the following reaction:
2H2 + O2 --> 2H2O
H2O or Water
Which group on the periodic table always has 7 valence electrons
halogens
How many valence electrons can the first energy shell hold?
2
Iodine-131 is an isotope of iodine that is useful in cancer treatments. What is the mass number of iodine-131?
131 amu
What type of bond is likely to form between a metal and a non-metal?
Ionic
Fill in the blanks to balance the following equation:
__Al + __O2 --> __Al2O3
4, 3, 2
Which is the least reactive group on the periodic table?
The noble gases (because of their full valence shells)
What element has the electron configuration 2, 8, 3?
aluminum
Which subatomic particle is not included when calculating atomic mass?
electrons
In an ionic bond, is oxygen likely to give up electrons or take electrons?
take electrons
If I combine baking soda and vinegar in a chemical reaction, and I have leftover vinegar, what is the limiting reactant?
Baking soda
(It limits the amount of reaction we can do. We could have reacted more if it weren't for the baking soda)
Calcium is part of which group on the periodic table?
The alkaline earth metals
What is the electron configuration of sulfur?
2,8,6
Chlorine-37 is one common isotope of chlorine. How many neutrons does it have?
20 neutrons
Does PCl3 (phosphorus trichloride) Have an ionic or covalent bond?
covalent
Magnesium and oxygen can react to form magnesium oxide: 2Mg + O2 --> 2MgO.
If I have a reaction that produces 6 moles MgO, how much oxygen (O2) was needed to react?
3 moles O2
( 6 MgO * 1 O2 / 2 MgO = 3 )
What is the most reactive alkali metal: Lithium, Potassium, Rubidium, or Caesium?
Caesium
(It is the furthest down on the periodic table)
Ernest Rutherford fired small alpha particles at gold atoms, and found that many of them pass straight through, but a small number of them were deflected. From this experiment, Rutherford inferred the existence of the ______?
nucleus
A certain atom has a mass of 14, 6 protons, and 7 electrons. List the name of the atom, its charge, and its number of neutrons.
Carbon, -1, 8 neutrons
What is the chemical compound of magnesium chloride (Mg and Cl)?
MgCl2
Iron (Fe) and Oxygen (O2) combine in a chemical reaction to make iron oxide (FeO). Use the balanced chemical equation to find how many moles of iron oxide are produced when 3.5 moles of oxygen react.
7 moles of Iron Oxide
(Balanced equation = 2Fe + O2 --> 2FeO
3.5 mole O2 * 2 mole FeO/1 mole O2 = 7 mole FeO)