Definitions/TRUE OR FALSE

DF increases with increasing molecular mass and decreases with increasing distances between

Are closely packed because of the strong attractive forces among them.

It absorbs heat and cools the surroundings

London dispersion forces is one of the types of intramolecular forces

This is formed by the complete transfer of valence electrons between atoms.

They have attractive forces to keep them the period so that the total value of a certain amount of them is definite

In science, a substance made from two or more different elements that have been chemically joined together

Any chemical compound that is made up of only atoms like bromine, hydrogen, iodine, fluorine, chlorine, oxygen

This depends only on the type of matter in a sample and not on the amount.

Solids can slide past one another but not full completely apart

Made when two or more substances are combined but they are not combined chemically

Are forces that exist between molecules

These are tiny particles that make up matter. It cannot be broken down into other substances by chemical.

Two functional groups of a molecule can form hydrogen bonds with each other

Weak bond formed when a hydrogen with a partial positive charge is close to an atom in a molecule

Don't have enough kinetic energy to overcome the forces of attraction between them

It is a dissolving medium

They share electrons in order to achieve octet configuration and become more stable

It is a homogeneous mixture of one or more solute dissolved in solvent

Arise from the unequal sharing of electrons by covalently bonded atoms.

Metal loses electrons to become a positive cation whereas non-metal accept those electrons to become a negative anion

Formed via attraction of the mobile electrons referred to as sea of electrons and the fixe positively charged metal ions

Solid to liquid

They are essentially no attractive forces between particles.

Is one that being dissolved in a solution

Energy required to change exactly 1 g of a liquid to vapor at its normal boiling point

Particles of a gas can complete the overcome the force of attraction between them and move apart

Liquid cannot change shape and doesn't have a fixed volume.

Liquids have attractive forces to keep them together so that the total volume of a certain amount of them is definite

Two functional groups of a molecule can form hydrogen bonds with each other

The particles of a solid don't have enough kinetic energy to overcome the force of attraction between them

It is the temperature at which the vapor pressure of a liquid is equal to the external pressure

A combination of two non-metals

It is present in samples of pure elemental metals such as gold or aluminum or alloys like brass or bronze.

Endothermic is the process that releases heat causing the temperature to rise

Liquid to solid

They cannot be crowded together anymore unless they are squeezed and deformed

The branch of science that deals with the identification of the substances

Solids have a fixed volume and shape because the particles are packed closely together and cannot move around.

This bond is formed between atoms that have similar electronegativities—the affinity or desire for electrons

Are the forces that hold atoms together within a molecule.

Cohesive forces within the liquid

This type of covalent bonding specifically occurs between atoms of metals.

The temperature when the liquid starts to boil. Everything different boiling point it depends of the pressure above

Spontaneous rising of a liquid in a narrow tube. It is also observed in liquids.

Two pure metals

These depend on the amount of matter that is present.

The positive pole is attracted to a negative anion well the negative pole is attracted to a positive cation.

causes two individual masses to move closer together

Dipole-dipole forces is a type of intermolecular force

The measure of its tendency to resist flowing motion

Gases have a neither a fixed volume nor a fixed shape.

There are attractive forces between particles of a gas

Molecule to molecule

Refers to anything that occupies space and has mass

Are fundamentally electrical in nature

Causes the molecules on the surface of a liquid to tighten their hold to one another.

Covalent bond is a type of intermolecular forces.

Have a lot of kinetic energy

Attraction between centers of opposite charge into molecules close to each other

Molecule to molecule

They are weak attractions that are used to explain the attraction between nonpolar molecules.

Liquid evaporates in a closed container.

Attraction force between molecules of the same substance

Solid particles are closely packed because of strong attractive forces among them

They exist when polar molecules are attracted to ions.

Exothermic is the process that absorbs heat and cools the surroundings

They can completely overcome the force of attraction between them and move apart

Releases heat causing the temperature of the immediate surroundings to rise

Have a fixed volume and shape

Escape of molecules from the surface of the liquid

It is much less in a liquid that in a gas but it takes place at an easily measured rate