100 Award-winning Science Fair Projects |
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Results 1-3 of 13
Page 15
... salt . Stir the salt and vinegar until the salt dissolves . 3. Add 20 pennies or copper coins to the jar . Wait for the verdigris on the coins to dis- appear so that the true copper color emerges again . 4. Rub the steel wool against ...
... salt . Stir the salt and vinegar until the salt dissolves . 3. Add 20 pennies or copper coins to the jar . Wait for the verdigris on the coins to dis- appear so that the true copper color emerges again . 4. Rub the steel wool against ...
Page 23
... salt • Tablespoon or 15 - ml spoon • Two 1 - foot ( 30 - cm ) insulated copper wires 6 - volt battery • Scissors You can easily separate table salt into its con- stituent elements with the aid of a 6 - volt bat- tery . The process not ...
... salt • Tablespoon or 15 - ml spoon • Two 1 - foot ( 30 - cm ) insulated copper wires 6 - volt battery • Scissors You can easily separate table salt into its con- stituent elements with the aid of a 6 - volt bat- tery . The process not ...
Page 24
... salt to the second glass . Label these glasses SUGAR and SALT . Label the third ( full ) glass WATER . 3. Place all 3 glasses in the freezer , and check every 2 hours to see which of the three liquids begins to freeze first . Leave all ...
... salt to the second glass . Label these glasses SUGAR and SALT . Label the third ( full ) glass WATER . 3. Place all 3 glasses in the freezer , and check every 2 hours to see which of the three liquids begins to freeze first . Leave all ...
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allow angle Attach ball birefringent bottle bucket cardboard carefully cellophane circle clay color compass contour line Craft knife create cubic dial diameter drawing Drill dune Earth Earth-to-Sun Distance edge electrical electrophorus Explanation Felt-tip marking pen foam board glass glue hanger hole inches inferior planets Leyden jar light liquid magnet Masking tape Measure Mercator projection metal meter methyl salicylate microphyle mirrors molds Moon move nail Need needle paper clip pencil pendulum Phenakistoscope philodendron phonograph photographs piece Place plant plaster plastic Pluto plywood polarized poster board potato Procedure protractor Quakemaster Record your observations refractive index Repeat step Result rotate rubber bands ruler salt sand scientists screen screw seeds side soap soil spoon square star star clock station stereoscopic string strip Stroboscopic Styrofoam sugar surface teaspoon test tube tracing waves wooden dowel yardstick