Chemistry, 10.07.2019 16:30, moniquejg1800
Which set of procedures and observations indicates a chemical change? a) ethanol is added to an empty beaker and the ethanol eventually disappears. b) a solid is gently heated in a crucible and the solid slowly turns to liquid. c) large crystals are crushed with a mortar and pestle and become powder. d) a cool, shiny metal is added to water in a beaker and rapid bubbling occurs.
Answers: 1
Chemistry, 21.06.2019 20:50, karlyisaunicorn
Which real-world scenarios below represent physical and chemical changes? -running a car -exploding fireworks -mixing water and powdered drink mix -combining oil and vinegar to make salad dressing -taking aspirin for a headache -diluting bleach with water-digesting dinner-spreading peanut butter on bread
Answers: 2
Chemistry, 22.06.2019 23:00, 1315055427
Which subshell is represented by the actinides family?
Answers: 1
Which set of procedures and observations indicates a chemical change? a) ethanol is added to an emp...
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