1. What can be used to detect the presence of individual elements?
- Clarifying with the periodic table
- Asking a scientist (although a good idea - please don't choose this)
- Emission Spectroscopy
- Flame tests
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Other questions in this quiz
2. How do you test for sulfate ions?
- Adding HCl and barium chloride solution. If a white precipitate forms it contains sulfate ions. The precipitate will be barium sulfate.
- Adding sulfuric acid and barium chloride solution. A displacement reaction will occur to show sulfate ions are present.
- Adding phosphate ions and silver nitrate. The metal will run off and fizz, producing a hydrogen. This shows sulfate ions are present.
- Placing the sulfate ion solution in an oxygen tank. It will freeze is sulfate ions are present.
3. Most simple molecular substances don't dissolve in water - with exception to.... ?
- Sugar (sucrose)
4. Why are metal ions malleable?
- The layers of negative protons can slide over eachother in a sea of neutrons
- The layers of positive ions can slide over eachother in the sea of electrons
- The layers of positive electrons can slide over eachother in a sea of protons
- The layers of negative ions can slide over eachother in a sea of electrons
5. What is the equation for chromatography?
- distance traveled by component / distance traveled by solvent
- e = mc^2
- 3.14 x r^2
- distance traveled by component x distance traveled by solvent