What are the bonds formed by atoms, since they form molecules?
What are covalent bonds
100
What is the difference between a strong acid and a weak acid?
What is a strong acid completely ionizing in a solvent, while only part of the molecules in a weak acid are ionized
100
What is the gas needed for combustion to occur?
What is oxygen
100
Why are gases considered fluids?
What is the ability to flow
100
What is it called when when particles are constance moving between two or more phases, yet there is no net change in the amount of substance?
What is an equilibrium
200
Which is stronger, an ionic bond or a covalent bond?
What is a covalent bond
200
Why is HCO3 in an aqueous solution considered amphoteric?
What is the ability to act as both an acid and a base
200
What is the reaction that has occurred in 2 H2O ---> 2 H2 + O2?
What is decomposition
200
What is standard temperature and pressure?
What is 0 degrees Celsius and 1 atm
200
Where is the the liquid and vapor phases of a substance identical in a phase diagram?
What is the critical point
300
What are the charges of the molecules in a covalent bond?
What is neutral
300
What does a solution have an equal concentration of when it is neutral?
What are hydronium ions
300
What is the product when oxygen gas combusts with hydrogen gas?
What is water
300
What are three unique properties of gases?
What has low density, is highly compressible, and completely fills a container
300
Why are the melting points of ionic substances higher than molecular substances?
What is stronger forces
400
What kind of bond is salt an example of?
What is an ionic bond
400
What is formed from a neutralization reaction?
What are water molecules and a salt
400
What is the type of chemical reaction in Pb(NO3)2 + 2 KI ---> PbI2 + 2 KNO3?
What is double displacement
400
What does the kinetic-molecular theory state?
What law states that gas particles can easily move towards or past on another, are very small relative to their size, and collide against the walls of their container, generating pressure
400
Which of the following endothermic changes has the greatest changes in energy, melting, evaporation, or sublimation?
What is sublimation
500
What are two differences between covalent and ionic bonds?
What are ionic bond's ability to from compounds and the transfer of electrons, and the formation of molecules and sharing of electrons in a covalent bond
500
What is the equation that relates the amount of moles (n) of a solute to the concentration (c) and volume (V)?
What is n=cV
500
What are five factors that affect the rate of a chemical reaction?
What is Activation Energy, Temperature, Pressure, Solute and Solvent Concentration, and Surface Area
500
What is the average kinetic energy of a gas proportional to?
What is the gases's absolute temperature
500
What is the triple point in a phase diagram?
What is the temperature and pressure at which all three states of a substance can be in equilibrium