He performed the cathode ray tube experiment.

F=(kq₁q₂)/d² (force equals a constant times charge 1 times charge 2 all over distance squared)

He discovered both the mass and charge of the electron.

The model states that an atom is comprised of a positively-charged "dough" with negatively charged electrons scattered throughout the positive dough.

He performed the oil drop experiment.

He discovered both the presence of the electron and its mass/charge ratio (but not the individual components of the ratio).

He is noted for his gold foil experiment.

His experiment showed the presence of the atomic nucleus as a central + charged region of the atom.

He accounted for the charge of the nucleus but failed to incorporate its mass.

He discovered that in addition to positively charged particles that the nucleus also contains neutral particles.

atomic number = z, atomic mass = a and charge = q.

Atomic number is noted at the bottom left, atomic mass at the top left and charge is noted at the top right of the given chemical symbol.

An ion is a charged particle resulting from a gain/loss of electrons.

A cation is a positively charged ion resulting from electron deficit.

An anion is a negatively charged ion resulting from electron surplus.

False. Only neutrally-charged atoms have a 1:1 ratio of protons and electrons.

Oxidation refers to the loss of electrons.

They tend to lose electrons to make cations.

They tend to gain electrons to form anions.

Isotopes are representative particles of the same element which differ by their number of neutrons in the nucleus.

It provides a distribution plot of each isotope of which an element is comprised and the isotopes relative percent composition.

amu stands for atomic mass unit; one amu is equal to 1/12 the mass of Carbon-12.

Average atomic mass is the percent of isotopic abundance multiplied by the isotope's amu's.

Physical properties are observable characteristics of a substance when stable.

Physical properties include (but are not limited to) luster, malleableness (bending ability), ductility (ability to be pulled into a wire), odor, conductivity (both electrical and thermal), taste, density and physical state change temperatures.

Physical change is defined as the transformation from one stage /phase of matter into another (gas to liquid, liquid to solid, etc.).

A chemical change is defined as one or more substances transforming into one or more different substances with different physical properties.

Chemical reactions typically involve some sort of temperature change (both endo- and exothermacism), evolution of a gas, solid precipitation upon mixing 2 or more aqueous substances and color change.

A precipitate is define as any insoluable solid formed from 2 clear solutions.

Units describe how much of something there is.

The metric system is a uniform system of prefixes and pre-determined base units for measurements. The prefixes tell us which power of 10 is assigned to a base unit.

The correct conversion factor should either be given or known (such as 1 inch = 2.54 centimeters)

First you divide the desired unit by the given unit. Then you multiply the result by the given unit.