The Periodic Table
Elements known as Alkaline Earth Metals commonly take on this charge
What is +2
The atomic number of an element is the total number of these particles in the nucleus
What is (are) the proton(s)
The substances found on the left hand side of the arrow in a chemical reaction are known as these
What are reactants
The type of reaction occurs in nuclear power plants
What is a nuclear fission reaction
Often called table salt, the chemical name for NaCl
What is sodium chloride.
Elements on today's periodic table are arranged according to this
What is their atomic number
An element has an atomic number of 76. The number of protons and electrons in a neutral atom of the element are ____
What is 76 protons and 76 electrons
A group of non-metal atoms joined together in a molecule with a net charge
What is a polyatomic ion
In mathematical terms, density is found by diving mass by this
What is volume
The chemical formula for magnesium oxide
What is MgO
Of the following elements Li, K, and S, this one is the biggest
What is K
Isotopes of the same element have different numbers of these subatomic particles
What are neutrons
This type of reaction is a chemical reaction between a fuel and oxygen
What is a combustion reaction
Energy stored in the bonds of molecules
Often called laughing gas, this chemical has the formula N2O
What is dinitrogen monoxide or nitrous oxide.
Emission of light from an atom occurs when an electron does this
What is drops from a higher to a lower energy level
The number of protons, electrons, and neutrons that an ion have with atomic number 6, mass number 14 and charge +2 contains
What is 6 protons, 4 electrons, and 8 neutrons
The products of the combustion of a hydrocarbon include these two compounds
What is water and carbon dioxide
This distinguishes a compound from a mixture
What is mixtures can be separated physically, while compounds cannot
The (formula) result of metal lithium combined with the nonmetal sulfur
What is Li2S
The number of electrons in the outermost energy level of an flourine atom
What is 7
The number of protons and electrons that the chloride ion contains
What is 17 protons and 18 electrons
A type of reaction where substances neutralize (or partially neutralize) each other
What is an acid-base reaction
The formulas of all of the diatomic molecules
What are Br2, I2, N2, Cl2, H2, O2, and F2
This chemical, when mixed with bleach, can produce poisonous chlorine gas
What is ammonia, NH3