27.13. M http://www.ck12.org
27.13 M
macroscopic
A description of substances that refers to objects that can be seen, touched, and measured directly.
magnetic quantum number
Indicates the orientation of the orbital around the nucleus, symbolized by the letterml.
main-group element
Ap-block element.
mass
Measure of the amount of matter that an object contains.
mass defect
The difference between the mass of an atom and the sum of the masses of its protons, neutrons, and electrons.
mass number
The total number of protons and neutrons in an atom.
matter
Anything that has mass and takes up space.
measurement
A quantity that has both a number and a unit.
melting point
The temperature at which a solid changes into a liquid; it is the same as the freezing point.
metal
An element that is a good conductor of heat and electricity.
metallic bond
The attraction of the stationary metal cations to the surrounding mobile electrons.
metalloid
An element that has properties that are intermediate between those of metals and nonmetals.
microscopic
A description of substances that refers to the small particles (atoms and molecules) that make up all matter.
miscible
A quality observed by liquids that dissolve in one another in all proportions.
mixture
A physical blend of two or more components, each of which retains its own identity and properties in the
mixture.
moderator
A material which slows down high-speed neutrons in a nuclear reactor.
molal boiling-point elevation constant
A constant that is equal to the change in the boiling point for a 1-molal solution of a nonvolatile molecular
solute.
molal freezing-point depression constant
A constant that is equal to the change in the freezing point for a 1-molal solution of a nonvolatile.
molality
The number of moles of solute dissolved in one kilogram of solvent.
molar heat of condensation
The heat released by one mole of a substance as it is converted from a gas to a liquid.
molar heat of fusion
The heat absorbed by one mole of a substance as it is converted from a solid to a liquid.
molar heat of solidification