Final Flashcards
(25 cards)
What is the primary type of bond formed between two nonmetals?
Covalent bond
True or False: Ionic bonds form between metals and nonmetals.
True
Fill in the blank: The pH scale measures the concentration of __________ in a solution.
Hydrogen ions
What is the chemical formula for hydrochloric acid?
HCl
What is the molarity of a solution containing 1 mole of solute in 1 liter of solution?
1 M
Define stoichiometry.
The calculation of reactants and products in chemical reactions.
What is the ideal gas law equation?
PV = nRT
True or False: Avogadro’s law states that equal volumes of gases at the same temperature and pressure contain equal numbers of molecules.
True
What is the term for a substance that increases the concentration of hydrogen ions in a solution?
Acid
What is the term for a substance that decreases the concentration of hydrogen ions in a solution?
Base
Fill in the blank: The process of balancing a chemical equation ensures that the number of __________ is the same on both sides.
Atoms
What is the standard temperature and pressure (STP) for gases?
0 degrees Celsius and 1 atm pressure
What does the term ‘limiting reactant’ refer to?
The reactant that is completely consumed in a chemical reaction.
What is the molecular formula for methane?
CH4
True or False: A strong acid completely dissociates in water.
True
What is the difference between an endothermic and an exothermic reaction?
Endothermic reactions absorb heat; exothermic reactions release heat.
What is the term for the amount of product formed in a reaction based on stoichiometric calculations?
Theoretical yield
What is the volume occupied by 1 mole of an ideal gas at STP?
22.4 liters
What type of bond involves the sharing of electron pairs between atoms?
Covalent bond
Fill in the blank: The __________ is a measure of how much solute is dissolved in a solution.
Concentration
What is the formula for calculating percent yield?
(Actual yield / Theoretical yield) x 100%
What are the products of the combustion of hydrocarbons?
Carbon dioxide and water
True or False: The concentration of a solution can be expressed in molarity, molality, and percentage.
True
What is a common indicator used to test for acids and bases?
Litmus paper
