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25 terms

Sience Unit 1

Science Unit 1 Vocab
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Alloy
a mixture containing two or more metallic elements or metallic and nonmetallic elements usually fused together or dissolving into each other when molten
Steel
A form of iron that is both durable and flexible. It was first mass-produced in the 1860s and quickly became the most widely used metal in construction, machinery, and railroad equipment.
Brass
an alloy of copper and zinc
Impure MAtter
a mixture of two or more different kinds of pure matter
paper chromatography
A method of separating the colors in a mixture based on the different weights of the molecules that make up the different pigments in the mixture.
Solvent
a liquid substance capable of dissolving other substances
Solute
the dissolved substance in a solution
mixture
(chemistry) a substance consisting of two or more substances mixed together (not in fixed proportions and not with chemical bonding)
Rf factor
relative front; number used to determine which pigment has been separated on the paper by dividing the movement of the pigment by the movement of the solvent.
Bunsen Burner
a gas burner used in laboratories
Beaker
a cup (usually without a handle)
Electronic Balance
A device for measuring the mass of an object that gives you a digital reading of the mass.
Sparker
Used to light bunsen burners in a lab
Apron
a garment of cloth or leather or plastic that is tied about the waist and worn to protect your clothing
Graduated Cylinder
a cylindrical graduate
safety goggles
Used to protect eyes
Test tube
glass tube closed at one end
Petri Dish
a shallow dish used to culture bacteria
Test tube rack
a rack that holds test tubes
Thermometer
a measuring instrument for measuring temperature
Funnel
a conically shaped utensil having a narrow tube at the small end
Beaker Tongs
used to pick up a hot beaker
Wire mesh
Used for holding beakers
over flames.
Ring Stand
used to hold items being heated clamps or rings can be used so that items may be placed above the lab table for heating by bunsen burners or other items
Erlenmeyer Flask
a conical flask with a wide base and narrow neck