Chemistry To Memorize

Anything which exibits the property of intertia

The study and investigation of the structure and properties of matter

A procedure for processing and understanding certain types of information

A possible explanation for an observation

A set of tested hypotoses that gies an overall explanation of some natural phenomenon

Summarizes what happens. They are summaries of observations. Laws do not change often if ever

Refers to the agreement of a given value to the true value

refers to the degree of agreement among several measurements of the same quantitiy

zeros between nonzero digits. These always count as significant figures

Zeros right of the rightmost zero. They are significant and count only if the number contains a decimal point

Numbers that are not obtained using a measuring device. Fond by counting or as definiton. Exact numbers are considered to have an infinite number of signifiant figures and therefore do not limit how many significant figures we report.

Density = mass/volume

Anything that occupies space and has mass

Have visibly indistinguishable parts

Have visibly distinguised parts

Substance with a constant composition of one component

Involves a change in the physical properties of a substance or misture. The molecules themselves do not chnage composition

A substance with constant composition that can be broken down to elements by chemical process

Substances that cannot be decomposed into simpler substances by chemical or physical means

Hve no net charge. Therefore for a given atom the number of protons must equal the number of electrons

Atoms or ions with the same number of protons but with different numbers for the neutrons

An atom or group of atoms that has a net positive or negative charge

Positively charged ion

Negatively charged ion

Solid consisting of oppositely charged ions

Tend to be conductive, malleable, lustrous, and ductile elements

Tend to be non-conductors, are brittle, Alkaline Earth Metals and the Transition elements

Form 1^+ ions(Cations, lose 1 electron)

Form 2^+ ions(Cations, Lose 1 electron)

Form 1^- ions(Anions, gain 1 electron)

Usually do not like to gain or lose electrons and therefore are normally monoatomic

Elements in the same horizontal rows on the periodic table

An instrument used to measure atomic or molecular masses