What property of an element is determined by the number of protons in its nucleus?

what do you call the electrons at the outermost shell of an atom

The mass of a neutron is approximately how many times greater than the mass of an electron?

what is the mass in grams of an electron

The mass of a proton is approximately how many times greater than the mass of an electron?

What is the mass (in grams) of a proton?

What is the mass (in grams) of neutron?

what is the charge of an electron

what is the charge of a proton

what types of materials behave like iron when placed in a magnetic field

what do you call the distinct pattern in space which the atoms of metal arrange themselves when they combined to produce substance of recognizable size

what are considered as the building blocks for engineering materials

what is a pure substance that cannot be broken down by chemical means to simpler substance

what determines the ability of atoms to combine with other atoms

what is generally accepted nominal mass of a proton

what is the term used to describe the amount of energy that is given off when an electron moves from one orbit to a lower orbit

what refers to a metal combined with one or more other elements?

what refers to chemical combined elements with definite proportions of the component elements

what refers to physical blend of two or more substances

what is the smallest part of a compound that still retains the properties of that compound

what is a solid has a crystalline structure, the atoms arranged in repeating structures called _______.

what type of bonding refers to the sharing of electrons

what refers to a crystal infection characterized by regions of severe atomic misfit where atoms are not properly surrounded by neighbor atoms

what do you call metals reinforced by ceramics or other materials, usually in fiber form

what is the usual valence of non-metallic elements

metalloids have a valence of

what do you call an atom that has lost or gain an electron

what is a combination of one or more metals with a non-metallic element

what do you call an atom that has lost or gain an electron

.Polymer comes from Greek words "poly" which means "many" and "meros" which means

The engineering materials known as "plastics" are more correctly called

What is a combination of two or more materials that has properties that the components materiais do hot have by themselves?

what is a reference sheet for the elements that can be used to form engineering materials

who has been accepted as the author of the periodic table which was developed by chemist in the mid 19th century

what physical property of a material that refers to the point at which a material liquefies on heating or solidifies on cooling

what physical property of a material that refers to the temperature at which ferromagnetic materials can no longer be magnetized by outside forces

what is the ratio of the velocity of light in a vacuum to its velocity in another material

What physical property of a material that refers to the rate of heat flow per unit time in a homogenous material under steady-state conditions, per unit area, per unit temperature gradient in a direction perpendicular to area?

. What is the absolute value of the ratio of the transverse strain to the corresponding axial strain in a body subjected to uniaxial stress?

What physical property of a material refers to the highest potential difference (voltage) that an insulating material of given thickness can withstand for a specified time without occurrence of eiectrical breakdown through its bulk?

What physical property of a material refers to the ratio of the amount of heat required to raise the temperature of a unit mass of a substance 1 degree to the heat required to raise the same mass of water to 1 degree?

- What physical property of a material refers to the temperature at which a polymer under a specified load shows a specified amount of deflection?

what mechanical property of a material refers to the nominal stress at fracture in a tension test at constant load and constant temperature

what mechanical property of a material refers to the resistance of plastic deformation

what typical penetrator is used in Brinell hardness test

What parameter is defined as the ternperature at which the toughness of the material drops below some predetermined value, usualy 15 ft-lb?

what is obtained by repeatedly loading a specimen at given stress levels until it fails

what dimensional property of a material refers to the deviation from edge straightness

what dimensional property of a material refers to a wavelike variation from a perfect surface, generally much wider in spacing and higher in amplitude than surface roughness

which is composed of chains of cellulose molecules bonded together by another natural polymer called

what is a polymer production process that involves forming a polymer chain containing two different monomers

what is the generic name of a class of polymer which is commercially known as nylon

by definition, a rubber is a substance that has at least _____ elongation in tensile test and is capable of returning rapidly and forcibly to its original dimensions when load is removed

what is a method of forming polymer sheets or films into three-dimensional shapes, in which the sheet is clamped on the edge, heated until it softens and sags, drawn in contact with the mold by vacuum, and cold while still in contact with the mold

what is the process of forming continuous shapes by forcing a molten polymer through a metal die

what chemical property of a material which refers to its ability to resist deterioration by chemical or electrochemical reactions with environment?

what is the ratio of the maximum load in a tension test to the original cross-sectional area of the testbar

what is the ratio of stress to strain or material loaded within its elastic range

measure of rigidity

the greatest stress which a material is capable of withstanding without a deviation from acceptable of stress to strain is called

what refers to the stress at which a material exhibits a specified deviation from the personality of stress and strain

what is the amount of energy required to fracture a given volume of material

What mechanical property of a material which is a time-dependent permanent strain under stress

in tensile testing, the increase in the gage length measured after the specimen fractures within the gage length of is called

what is the resistance of a material to plastic deformation

what is the maximum stress below which a material can theoretically endure an infinite number of stress cycles

a substance that attracts a piece of iron

which of the following is a natural magnet

has permeability slightly less than that of free space

has slightly greater than that of free space

have very high permeability

astm stands for

what prefix in steel identification means composition varies from normal limits ?

what prefix in steel identification means it is made in an electrical furnace ?

what letter suffix in steel identification means that it is steel with boron as an alloying element

what do you call tin mill steel without a coating ?

what combination of elements has high electrical resistance , high corrosion resistance , and high strength at red heat temperatures , making it useful in resistance heating?

a steel cannot qualify for stainless prefix until it has at least how many percent of chromium ?

what do you add to compensate for the remaining high iron oxide content of the steel

which of the following cast irons is heat treated for ductility

which cast iron is hard and wear-resistant

what is considered as the general-purpose, oldest type and widely used cast iron ?

the effect of manganese in cast irons is to

the effect of aluminum in cast iron is to

the effect of silicon in cast iron is to

iron is said to be abundant in nature . about how many percent of the earth's crust is iron

what is the advantage of quench hardening

what is the lowest temperature diffusion hardening process and does not require a quench

the following statements are true except one. which one?

which of the following is a requirement for hardening a steel

what field of study and compasses the procurement and production of metals

what do you call earth and stone missed with the iron oxide

what is a coal that has been previously burned in an oxygen poor environment

what is the most common alloying ingredient in copper

what refers to the case hardening process by which the carbon content of the steel near the surface of a part is increased?

what is the process of heating a hardened steel to any temperature below critical temperature, followed by any desired rate of cooling

what is defined as an intimate mechanical mixture of two or more phases having a definite composition and a definite temperature of transformation within the solid state

what is the most undesirable of all elements commonly found in steels

what impurity in still can cause "red shortness" which means the steel becomes unworkable at high temperature

what is a method of case hardening involving the fusion in which the steel to be case hardened is machined , heat-treated , placed in an airtight box and heated to about 1,000 degrees fahrenheit ?