Chemical Equations & Reactions
One of the possible states of matter indicated in a chemical equation which describes a reactant or product that is dissolved in water.
Aqueous (aq)
The amount of a substance that contains Avogadro's number of fundamental particles of that substance.
What is a mole?
When these two particles exist in equal number, the atom has no net charge. However, if one is greater than the other, the atom will have that same charge.
What are protons and electrons?
This scientist is credited with finding the first subatomic particles (electrons) within the atom.
Who is J. J. Thomson?
Metals tend to lose electrons, forming this type of ion.
What is a cation?
"Matter (or mass) is constant and is never created nor destroyed in chemical a process"; the scientific law that is the basis for balancing chemical equations.
What is The Law of Conservation of Matter (or Mass)?
A proportion, in moles, of two substances in a chemical equation.
What is a mole ratio?
An element can have different mass numbers, because it can have different numbers of which subatomic particle?
What is neutron?
What is the location of the positive charge in the atom, or the nucleus.
Non-metals tend to take electrons (from metals), forming this kind of ion.
What is an anion?
A chemical reaction in which oxygen is a reactant and carbon dioxide and water are products; often accompanied by heat and light.
What is Combustion?
The molar mass of a substance is the mass, in grams, of how much of that substance?
1 mole
The ion K+ has this many electrons.
What is 18?
Who is John Dalton?
A type of bonding that involves a complete exchange or transfer of electrons from one atom to another.
What is ionic bonding?
Another name for an ionic compound, and it's the product of a neutralization reaction along with water.
What is "salt"?
In a chemical reaction, it is the reactant that runs out first, and therefore determines the amounts of everything else in the reaction.
What is the limiting reactant?
The isotope carbon-14 has this number of neutrons.
What is 8?
This scientist is credited with introducing the "planetary model" of the atom.
Who is Niels Bohr?
The type of bonding that results when two atoms share electrons, but not evenly.
What is a polar covalent bond?
A substance that is formed, or yielded, in a chemical reaction.
What is product?
1 mole of this element has a mass of 26.98 grams.
What is Aluminum?
This quantity, found on most periodic tables, is calculated from the weighted average of the existing isotopes of an element.
What is atomic mass, or average atomic mass?
The discovery of this subatomic particle was made by studying cathode rays.
What is an electron?
When dissolved in water, this type of compound will not conduct electric current.
What is a covalent or molecular compound?