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Science 8

TermDefinition
qualatative made by gathering information that can be recorded using descriptive language
quanatative made by gathering information that can be recorded as a number with a measurement unit
inference not a fact, but an interpretation of what the direct observations mean
scientific law describes what scientists expect to happen every time under a particular set of conditions
constant part of an experiment that is held in the same condition for control and experimental
variable part of the experiment that changes
manipulative variable a factor in a controlled experiment that is intentionally changed by the experimenter
theory a well tested explanation for a wide range of observations or experimental results
inquiry to ask for information
responding variable a resulting factor in a controlled experiment that is observed and measured to see if it changes due to the manipulation of another variable
experiment a course of action completed in order to test a hypothesis
control a standard to which all other levels are compared in a scientific experiment
matter anything that has mass and takes up space
mass the amount of matter in an object
physical properties any change that alters form or appearance or matter but does not make any substance in the matter into a different substance
chemical properties a change in matter that produces one or more new substances
weight amount of gravity on an object
units of mass grams
accuracy the extent to which a given measurement agrees with the standard value for that measurement
calibration to determine the caliber of (a tube)
graduated cylinder a measuring instrument for measuring fluid volume
International System Of Measurement an internationally accepted system of physical units, using the meter, kilogram, centimeter, etc as the basic units of length, mass, time, amount of substance, etc.
liquid A phase of matter in which atoms or molecules can move freely while remaining in contact with one another. A liquid takes the shape of its container.
mass In physics, the property of matter that measures its resistance to acceleration. Roughly, the mass of an object is a measure of the number of atoms in it. The basic unit of measurement for mass is the kilogram.
matter something that occupies space
meniscus the convex or concave upper surface of a column of liquid, the curvature of which is caused by surface tension.
Newton- a unit of measurement the standard unit of force in the International System of Units (SI), equal to the force that produces an acceleration of one meter per second per second on a mass of one kilogram.
precision mechanical or scientific exactness
triple beam balance The Triple Beam Balance is a typical mechanical balance. It has a beam which is supported by a fulcrum. On one side is a pan on which the object is placed. On the other side, the beam is split into three parallel beams , each supporting one weight.
unit any specified amount of a quantity, as of length, volume, force, momentum, or time, by comparison with which any other quantity of the same kind is measured or estimated.
volume the amount of space, measured in cubic units, that an object or substance occupies.
weight the force that gravitation exerts upon a body, equal to the mass of the body times the local acceleration of gravity: commonly taken, in a region of constant gravitational acceleration, as a measure of mass.
matter anything that has mass and volume (takes up space)
pure substance a substance made of only one kind of material having definite proportional amounts and properties
mixture matter that consists of two or more substances not chemically combined
element the simplest type of pure substance
compound two or more elements chemically combines
homogeneous mixture two or more substances not chemically combines, but appearing to be evenly bleded
heterogeneous mixture two or more substances not chemically combined, and appearing non-uniform with physically distinct substances included
balance equipment used to measure mass
boiling point temperature at which a liquid turns to gas
brittle breaking into small pieces if bent or pressed
centimeter cubed a unit of volume derived from length times width times height
compress to squeeze or press together
dissolve to break into pieces too small to be seen
gas a state of matter having indefinite volume, indefinite shape, with particles bouncing around and not touching each other
gram and SI unit to measure mass
gram per centimeter cubed a derived unit to measure the density of a solid
gram per milliliter a derived unit used to measure the density of a liquid
kilogram the SI based unit used to measure mass
liter the SI unit to measure volume of liquids
meniscus the curve on the upper surface of a liquid in a container caused by surface tension
milliliter an SI unit used to measure volume of liquids
phases of matter solids, liquids, gases, and plasma
physical property a characteristic of a pure substance that can be observed without changing it into another substance
solid a state of matter having definite volume, definite shape, with particles vibrating, touching, and locked into space
soluble able to dissolve
texture how something feels, especially whether it's bumpy or smooth
condensation point temperature at which a gas to turn liquid
conductor a material that does not allow electricity or heat to pass through easily
density an object's mass compared to it's volume
deposition a gas changing into a solid without changing into a liquid
ductile able to be pulled into long, thin wires
flexible able to bend without breaking
freezing point temperature at which a liquid turns to solid
insulator a material that does not allow electricity or heat to pass through easily
kinetic theory a physics theory that all matter is made of moving particles in random motion
luster shininess
magnetic material that is attracted to magnets
malleable able to be hammered or pressed into flat sheets
melting point temperature at which a solid turns to liquid
plasma a state of matter consisting of ionized (electrically charged) particles
sublimation
Created by: marianahernandez