Chemistry 2nd Semester Exam

In an energy change, heat is represented by what letter?

The substances that are the original substances, located on the left side of the equation:

Study of energy changes that occur during chemical reactions and changes in state:

Change of state when gas or vapor changes to a liquid:

The s sublevel resembles this type of shape:

Change of state when a solid changes directly to a gas or vapor without becoming a liquid first:

Law that relates the pressure and volume of a gas

Used to describe the distribution of electrons in atoms

The process by which gas particles under pressure pass through a tiny opening:

Electrons enter sublevels with the lowest energy first is known as the:

Electrons located in the outermost energy level of an atom are called:

At STP, temperature is at ______ Kelvins.

Atomic orbitals can hold two electrons at most, and they must have opposite spins is known as the:

Variable generally used to describe the number of moles in a gas:

When a gas is pumped into a closed rigid container, the pressure _______ as more particles are added.

Law that relates the pressure, volume, and temperature of a gas

Chemists use these as a basis to calculate how much reactant is needed or how much product will be formed in a reaction:

What part of a chemical equation indicate the relative number of moles of reactants and products?

Type of matter with definite shape and volume, and not easily compressed.

At the atomic level, a balanced equation indicates the number & types of _____ that are rearranged to make products.

All stoichiometric calculations begin with:

Accounts for the heat flow of the system at constant pressure:

Change of state when liquid changes to gas or vapor without boiling:

The p sublevel resembles this type of shape:

Elements lose or gain electrons to become like this group of elements:

Kinetic energy refers to:

What state of matter contains particles where their motion is rapid, constant, and random?

The gaseous state of a substance that is generally a liquid or solid at room temperature:

Law that relates the pressure and temperature of a gas

Defined as the quantity of heat needed to raise the temperature of 1 g of pure water 1ºC:

An empty space with no particles are no pressure is called a(n):

When the volume is increased, the pressure the gas exerts is ______.

The capacity for doing work or supplying heat:

A method that indicates the arrangement of electrons in a particular element:

The resulting or final substances that are located on the right of the chemical equation:

Type of matter with an indefinite shape, indefinite volume, and is easily compressed:

The amount of heat needed to increase the temperature of an object exactly 1ºC:

Variable used to describe the amount of volume in a gas:

Law that relates the temperature and volume of a gas

Type of matter that takes on the shape of its container, has a definite volume, and is not easily compressed:

A ______ is the average distance of the electron to the nucleus of an atom.

Stoichiometry is the portion of chemistry that deals with _________ relationships in chemical reactions.

The amount of heat needed to increase the temperature of 1 g of a substance 1ºC

What is conserved in every chemical reaction?

A measure of how much the volume of matter decreases under pressure:

The calculations of quantities in chemical reactions is a subject of chemistry called:

Anything that has mass and occupies space:

What is the temperature at which the motion of particles theoretically ceases?

In a sublevel with more than one orbital, put one electron into each orbital before putting 2e- into the other:

The measurement of heat flow into or out of a system for chemical and physical processes:

Atoms that have the same number of electrons are ______ with each other.

The mixing of particles of two substances caused by their random motion:

The insulated device used to measure the absorption or release of heat in chemical or physical process:

At STP, 1 mole of gas occupies a volume of _____ liters.

Avogadro's number is used to measure how many particles there are in one ______.

The SI unit of energy:

The heat absorbed by one mole of a solid substance as it melts to a liquid at constant temperature:

Under increased pressure, the particles in a gas are forced ___________.

Quantum number used to describe the electron spin:

A process in one that absorbs heat from the surroundings: