Chem Chp 2 Final

Front 1

The theory that each element is composed of tiny indestructible particles called atoms, that all atoms of a given element have the same mass and other properties, and that atoms combine in simple, whole-number ratios to form compounds?

Back 1

Atomic Theory

Front 2

The emission of subatomic particles or high-energy electromagnetic radiation by the unstable nuclei of certain atoms?

Back 2

Radioactivity

Front 3

A negatively charged, low mass particle found outside the nucleus of all atoms that occupies most of the atom's volume but contributes almost none of its mass?

Back 3

Electron

Front 4

A positively charged subatomic particle found in the nucleus of an atom?

Back 4

Proton

Front 5

An electrically neutral subatomic particle found in the nucleus of an toms, with a madd almost equal to that of a proton?

Back 5

Neutron

Front 6

The very small, dense core of the atom that contains most of the atom's mass and all of its positive charge; it is composed of protons and neutrons?

Back 6

Nucleus

Front 7

Atoms of the same element with the same number of protons but different numbers of neutrons and consequently different masses?

Back 7

Isotope

Front 8

Two or more atoms joined chemically in a specific geometrical arrangement?

Back 8

Molecule

Front 9

An atom or molecule with a net charge caused by the loss or gain of electrons?

Back 9

Ion

Front 10

A chemical formula that shows the actual number of atoms of each element in a molecule of a compound?

Back 10

Molecular Formula

Front 11

A chemical formula that shows the simplest whole number ratio of atoms in the compound?

Back 11

Empirical Formula

Front 12

A large class of elements that are generally good conductors of heat and electricity malleable, ductile, lustrous, and tend to lose electrons during the chemical changes?

Back 12

Metal

Front 13

A category of elements found on the boundary between the metals and nonmetals of the periodic table with properties intermediate between those of both groups, also called semi metals?

Back 13

Metalloid

Front 14

A class of elements that tend to be poor conductors of heat and electricity and usually gain electrons during the chemical reactions?

Back 14

Non-Metal

Front 15

Highly reactive metals in group 1A of the periodic table?

Back 15

Alkali Metals

Front 16

Fairly reactive metals in group 2A of the periodic table?

Back 16

Alkaline Earth Metals

Front 17

Highly reactive nonmetals in group 7A of the periodic table?

Back 17

Halogens

Front 18

The group 8A elements which are largely unreactive (inert) due to their stable filled p orbitals?

Back 18

Noble Gases

Front 19

An ion composed of two or more atoms?

Back 19

Polyatomic Ions

Front 20

Compounds composed of two or more covalently bonded nonmetals?

Back 20

Molecular Compounds

Front 21

A compound composed of cations and anions bound together by electrostatic attraction?

Back 21

Ionic Compounds

Front 22

A molecular compound that is able to donate the hydrogen H+ ion proton when dissolved in water there by increasing the concentration of hydrogen H+

Back 22

Acids