Chapter 8
To balance a chemical equation, you must
What is adjust the coefficients?
Actual yield must be determined by
What are experiments?
The kinetic-molecular theory of gases assumes that the particles of an ideal gas are separated by great distances. This implies that the gas particles are considered to have no definite
What is volume?
According to the equation KE=1/2mv2, if hydrogen ,molecules and oxygen molecules are at the same temperature, hydrogen molecules have
What are higher average speeds?
Atomic numbers of an atom are the same as the number of what in an atom?
protons
The formation of a solid product in a chemical reaction is represented by the symbol
What is (s)?
The mole ratio of aluminum to oxygen in this equation
2Al2O3 ———> 4Al + 3O2
What is 4:3?
If the particles in a sample of matter are attracted to each other but can move past each other easily, the matter is a
What is liquid?
As atmospheric pressure on the surface of a liquid decreases, its boiling point
What is decreases?
Carbon's atomic number is _______.
6
In the expression 3CO2, th numbers 3 and 2 are, respectively,
What is a coefficient and a subscript?
The participation of reactants in a chemical reaction is restricted by the
What is the limiting reactant?
Sublimation involves changing from a
What is solid to a gas?
Because liquids and gases flow, they are called
What are fluids?
What element has a number of 56?
barium
The type of reaction where two or more compounds react to form one product
What is synthesis?
For a chemical reaction, percentage yield represents the
What is the efficiency?
Liquids and solids are much denser than gases because the particles of liquids and solids have a
What is closer arrangement?
The force that tends to pull a liquid’s surface together and minimize its surface area is
What is surface tension?
Why does hydrogen have an atomic number of 1?
because it only has one proton
A type of chemical reaction, a mixture of propane and oxygen react to form carbon dioxide and water.
Combustion
The limiting reactant of a reaction can be used to calculate the
What is the theoretical yield?
A phase diagram relates the state of matter, pressure, and
What is temperature?
Th spontaneous mixing of the particles of two substances caused by their random motion is called
What is diffusion?
Some atoms have more ___________, which makes it an isotope and gives it a negative charge
electrons