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science final exam 2

Physical Science Final Exam Review Szerdy part 2

periodic table a chart where elements are grouped according to similar properties. Elements in the same vertical column are VERY similar.
Solid Particles are tightly packed, vibrate in place. Have constant shape & volume.
Liquid Particles are more loosely packed. Have a constant volume, can change shape.
Gas Particles are very spread out and move freely. Volume and shape can change.
Acid pH of 0 - 6. Has a sour taste, reacts with metals and carbonates. (Example: citrus juice, soda, vinegar, stomach acid.)
Base pH of 8-14. Has a bitter taste, feels slippery, Does not react with metal/carbonates. (Soap, ammonia, Shampoo, baking soda)
pH Scale Used to measure acids and bases.
neutral pH of 7, (Example: water)
salt when an acid and base combine, neutralize each other, make crystals.
Pure substance only one type of substance that can NOT be easily separated.
Mixture Two or more substances that are in the same place, but atoms are NOT chemically bonded.
Heterogeneous mixture can be easily separated (Example: trail mix, or a salad)
Homogeneous mixture evenly mixed, can NOT be easily separated (Example: Smoothie)
Solution When one part of the mixture is dissolved in another. (Example: Lemonade)
Solvent The part of the mixture in the largest amount (Example: the water in the lemonade)
Solute The part of the mixture in lesser amount )Example: Sugar or lemon in Lemonade)
Saturation When a solution has dissolved as much of the solute as it can possibly hold.
magnet Method of separation.....to pull iron filings out of sand.
Filter Method of separation.....to separate sand from water.
Distillation Method of separation.....where alcohol boils at a lower temperature, leaving water behind.
Evaporation Method of Separation....to remove water and leave salt behind.
Created by: Hinson Science