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matter test review
definitions
Question | Answer |
---|---|
matter | Matter is anything that has mass. Air, water, coffee, fire, human beings, and stars are matter. Light, X-rays, photons, gravitons, information, and love aren't matter. |
homogeneous | Having uniform properties or composition. |
phase(state of matter) | A phase is a part of a sample of matter that is in contact with other parts but is separate from them |
physical property | Measurement of a physical property may change the arrangement but not the structure of the molecules of a material |
chemical property | Measurement of a chemical property involves a chemical change |
element | An element is a substance composed of atoms with identical atomic number |
compound | A compound is a material formed from elements chemically combined in definite proportions by mass |
specific gravity | The mass of a unit volume of a substance relative to the mass of a unit volume of water. |
malleable | Capable of being hammered into sheets. Metals are typically malleable materials. |
ductile | Capable of being drawn into wire |
solubility | The solubility of a substance is its concentration in a saturated solution |
conductivity | Conductivity is the ability of a material to conduct electric current |
elasticity | the tendency of a body to return to its original shape after it has been stretched or compressed |
brittleness | firm but easily broken |
density | Mass of a substance per unit volume |