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22 Cards in this Set

  • Front
  • Back
Mixiture
Two or more substances that are mixed together but not chemically combined.
Solution
A very well mixed mixture.
Characteristic Property
A quality of a substance that never changes and can be used to identify the substance
Boiling Point
The temperature at which a substance boils.
Melting Point
The temperature at which a substance melts.
Physical Change
A change that alters the form or appearance of a substance but does not make the material into another substance.
Chemical Change
A change in which one or more substances combine or decompose to form new substances.
Chemical activity
A characteristic property of a substance that indicates its ability to undergo a chemical change.
Pure Substance
A substance made of only one kind of matter and having definite properties.
Element
A substance in which all atoms are alike and which cannot be broken down into other substances by chemical or physical means; one of about 100 basic materials that make up all matter.
Compound
A substance mad of two or more elements chemically combined
Weight
A measure of the force of gravity on an object.
Mass
A measure of how much matter is in an object.
International system of units (SI)
A system of measurement based on multiples of 10 and on established measures of mass, length, and time; used by scientists to measure the properties of matter.
Volume
The amount of space that matter occupies.
Density
The measurement of how much mass of a substance is contained in a unit of volume.
Molecule
A combination of two or more atoms.
Chemical Bond
The force that holds atoms together.
Ore
A rock that contains a metal or other economically useful element.
Electrolysis
A process by which electric currents break chemical bond.
Electrode
A metal part of an electrochemical cell, which gains or loses electrons;used in electrolysis.
Atom
The smallest particle of an element that has the properties of that element.