Set: SVMSscience - Chem Unit 1

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All 34 Terms

Term Definition
Solid Has a definite shape and definite volume, particles in a fixed position
Liquid Has an indefinite shape and definite volume, particles slide past one another
Gas Has an indefinite shape and an indefinite volume, particles spread apart
3 States of Matter Solid, Liquid, and Gas
Mixtures Two or more substances that are mixed together, but not chemically combined
Solutions Best Mixture
Pure Substance Only one kind of matter
Atom The smallest particle of an element with the properties of that element
Element A substance in which all atoms are alike, which cannot be chemically or physically separated
Compounds Made of two or more elements that are chemically combined
Chemical Bond The force that holds atoms together
Physical Change A change that alters the form or appearance of a substance, but does not make the materials in to another substance
Chemical Change A change that creates a new substance
Melting Change from solid to liquid, heat/energy added
Boiling Vaporization that occurs on and below the surface of a liquid, heat/energy added
Vaporization Liquid to gas, heat/energy added
Sublimation Change from Solid to Gas, heat/energy added
Freezing Change from liquid to solid, heat/energy taken away
Condensation Change from gas to liquid, heat/energy taken away
Characteristic Properties A quality of a substance that never changes and can be used to identify the substance
Chemical Formula A combination of symbols that represent the elements in a compound
5 Signs of a Chemical Reaction Change of color, change in temperature, precipitation, production of gas, change in properties (odor, light)
Crystalline Solid A substance made of crystals in which the particles are arranged in regular repeating patterns
Amorphous Solid A solid made up of particles that are not arranged in a regular pattern
Viscosity The resistance of a liquid to flowing
Temperature The measure of the average energy of the motion of particles in a substance
Pressure Force exerted on a surface, divided by the total area over which the force is exerted.
Evaporation Vaporization that occurs at the surface of a liquid
Molecule Particle consisting of two or more atoms
Atoms Building blocks of all matter, smallest particle of an element that still retains properties of that element
Parts of an Atom Protons, Neutrons, Electrons
Protons Particles with a positive charge
Neutrons Particles with no charge
Electrons Particles with a negative charge

Set Information

Terms 34
Creator pwerner
Created February 2, 2008
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Most Missed Words

  1. Compounds → Made of two or more elements that are chemically combined - 65 misses
  2. Amorphous Solid → A solid made up of particles that are not arranged in a regular pattern - 59 misses
  3. Solutions → Best Mixture - 56 misses
  4. Mixtures → Two or more substances that are mixed together, but not chemically combined - 54 misses
  5. 5 Signs of a Chemical Reaction → Change of color, change in temperature, precipitation, production of gas, change in properties (odor, light) - 54 misses
  6. Pure Substance → Only one kind of matter - 50 misses
  7. Crystalline Solid → A substance made of crystals in which the particles are arranged in regular repeating patterns - 47 misses