Periodic Table
This element has the symbol Au.
Gold.
What’s the term for a solid that forms in a solution?
Precipitate
This is the name for the substance that gets completely used up in a reaction.
Limiting reactant
Acids have a pH that’s lower than this number.
7
These are the electrons in the outermost energy level of an atom.
Valence electrons
These elements are in group 17.
Halogens.
Combustion always needs this element to happen.
Oxygen
Avogadro’s number tells us how many particles are in one of these.
Mole
This is the name for a substance that changes color in acids and bases.
Indicator
Elements in the same group of the periodic table have the same number of these.
Valence electrons
This element has 26 protons.
Iron
The coefficients tell you this in a reaction.
Mole ratio
What’s the unit for molar mass?
Grams per mole
This has a bitter taste.
Base
How many valence electrons does a neutral chlorine atom have?
7
This element does not have a neutron.
Hydrogen.
This type of reaction has one element replacing another in a compound.
Single replacement
How many moles are in 44 grams of CO₂?
2
A strong acid completely does this in water.
Ionizes
This is the maximum number of valence electrons an atom can have (except for helium).
8
This scientist created the modern periodic table.
Dmitri Mendeleev
What’s the general formula for a decomposition reaction?
AB → A + B
This is the term for the ratio of actual yield to theoretical yield.
Percent yield
The name of the cation for an acid.
H+
Atoms tend to gain, lose, or share electrons to achieve this stable configuration (8 valence electrons).
Octet rule