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Science Glossary Vocab
glossary vocab
54
Science
8th Grade
05/02/2009

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Term
D.O.T.
Definition
us department of transportation - transports hazardous materials
Term
measurement
Definition
units of quantitative data
Term
qualitative
Definition
data based on observations (and opinionated and subjective)
Term
quantitative
Definition
data based on numbers (objective)
Term
observation
Definition
data based on watching, noticing, or observing
Term
hazardous material
Definition
substance that could cause damage or harm
Term
biohazard
Definition
a substance that can cause infection or disease to lving organisms
Term
mixture
Definition
combo of multiple things that are not chemically bonded
Term
biohazard
Definition
causes infection or disease to living organisms
Term
corrosive
Definition
chemically wears away at solids
Term
flammable
Definition
able to catch fire when exposed to spark or change in temperature or pressure
Term
toxic
Definition
poison (self explanitory i hope)
Term
miscible in [insert substance here]
Definition
ability to mix with [insert substance here] (used for liquids)
Term
atom
Definition
the basic unit of all molecules. the atom is the simplest form that can not be broken down further.
Term
conductivity
Definition
ability to conduct electricity
Term
density
Definition
how compact a material is (mass/volume)
Term
evidence
Definition
proof used to prove a hypothesis
Term
reactivity
Definition
weather or not a material changes (i.e. gives off gass, changes color etc.) when exposed with another material (e.g. acid)
Term
cubic centimeter (cm^3)
Definition
1/100 of a m^3
a unit of measurement used for volume (L*W*H)
Term
Liter (L)
Definition
unit of measurement used for capacity
Term
Mililiter (mL)
Definition
1/1000 of a liter
a unit of measurement used for capacity (see liter)
Term
volume
Definition
how much space an object takes up
Term
Mass
Definition
how much stuff is in an object (the same as weight on earth... however, weight changes on other planets... mass never changes)
Term
weight
Definition
gravitational pull on an object
Term
material
Definition
a substance
Term
material scientist
Definition
a person who works with/studies/designs substances
Term
material engineer
Definition
a person manufactures (i.e. developes/processes/tests) substances
Term
property
Definition
a unique characteristic
Term
trade off
Definition
exchange of one thing for another
Term
life cycle
Definition
the stages that a product goes through (from being a raw material --> end of life
Term
life cycle diagram
Definition
raw materials --> manufacturing --> useful life (reuse> manufacturing) --> end of life (recycle>manufacturing) (throw away>landfill)
Term
raw material
Definition
natural substances (as found in nature) used to make product
Term
end of life
Definition
when the product is no longer useful, and is sent to one of two places: trash (landfill), or recycle (back to manufacture)
Term
manufacture
Definition
the process of turning the raw material onto the product (e.g. forming a bottle from melted glass, and labeling the package)
Term
useful life
Definition
the time in which the product fulfills its purpose. after this, it can be reused if sent back to the manufacturer.
Term
atomic mass (amu)
Definition
unit used for measuring the mass of atoms (see atoms and mass cards for details)
Term
element
Definition
multiple or singlle atoms of the same kind bonded together (unless they are single, then they arent bonded)
Term
family of elements
Definition
group of elements that share the same chemical properties (e.g. same number of valence electrons) (on the periodic table, a family is shown as columns)
Term
metal
Definition
anything to the left of the line of demarcation on the periodic table. they are usually conductive.
Term
periodic table of elements
Definition
the organization of all elements (see elements)
Term
chemical formula
Definition
a way to show atomic structure (e.g. H20 or NaCO)
Term
compound
Definition
multiple atoms of different kinds bonded together
Term
molecule
Definition
a general statement describing multiple atoms of the same or different kinds bonded togetehr
Term
chemical bond
Definition
the force that holds or fuses two atoms together
Term
dissolved solids
Definition
a solid substance that has been broken down into a liquid (see solute and solvent)
Term
distilled water
Definition
very pure water. it is the steam from boiled water, turned back into water.
Term
spring water
Definition
water that comes from the ground
Term
contamination
Definition
impurity/pullution
Term
hypothesis
Definition
an educated guess based on previously gathered data
Term
dissolve
Definition
i.e. break down
Term
solute
Definition
a solid that is being dissolved into a liquid (i.e. sugar is a solute of water)
Term
soluble in [insert substance here]
Definition
able to dissolve in [insert substance here] (used for solids)
Term
solvent
Definition
the liquid that the solute (see solute) is being dissolved into.
Term
solution
Definition
the substance that is made when the solute and the solvent are mixed together (i.e. the solution of sugar and water would be sugar water)
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