Zusammenfassung der Ressource
Topic 8: Chemical Analysis
- Reactions With Gases
- Hydrogen
- reaction with magnesium + hydrochloric acid
- creates magnesium chloride + hydrogen
- test by placing a lit splint into the test tube
- creates a squeaky pop noise
- Mg + HCl
- MgCl2 + H2
- Carbon Dioxide
- reaction with hydrochloric acid + a carbonate
- creates carbon dioxide + water + [carbonate used] chloride
- test by limewater
- limewater will go cloudy
- HCl + CaCO3 [calcium example]
- CO2 + H2O + CaCl2
- Oxygen
- hydrogen peroxide
- water + oxygen
- place glowing splint inside test tube
- glowing splint will light
- 2H2O2
- 2H2O + O2
- Chlorine
- damp blue litmus paper
- turns red then bleaches white
- test by smelling
- sharp, choking smell
- Flame Tests
- Test for metal ions
- dip a clean wire into a sample of the compound being used
- test by putting the loop into the edge of a blue flame from a bunsen burner
- Colour change
- Lithium
- Sodium
- Potassium
- Calcium
- Barium
- Copper