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Answers to FLAME Test Lab Qs ( pg 87-88)

Answers to FLAME Test Lab Qs ( pg 87-88). Compounds with sodium turned orange. Compounds with potassium turned lavender. Compounds with copper turned green. Compounds with strontium turned red. 1. What patterns do you notice in the groupings? Provide 3 examples.

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Answers to FLAME Test Lab Qs ( pg 87-88)

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  1. Answers to FLAME Test Lab Qs (pg 87-88)

  2. Compounds with sodium turned orange. • Compounds with potassium turned lavender. • Compounds with copper turned green. • Compounds with strontium turned red. 1. What patterns do you notice in the groupings? Provide 3 examples.

  3. Red. All substances with strontium turned red. • Electrons jump to an outer energy level when they absorb energy and when they fall back down, they release a photon of light. Predict the color of the flame for a substance called strontium sulfate. Explain your reasoning. Make a prediction: Why does the substance only glow when heated? What do you think is happening inside the atom?

  4. The metal. Copper nitrate and potassium nitrate turned different colors even though they both had nitrate in them. Making Sense Qs: Did the metal or the non-metal seem to cause the color change? What is your reasoning?

  5. An electron jumped to an outer shell. Yes, 11 electrons. No, an electron has jumped up to the 4th shell into the p subshell. Consider the possibility that the electron configuration of a sodium atom changed from [Ne]3s1 to [Ne]4p1. This means that the electron in the 3s shell moved to the 4p shell. What is the difference between [Ne]3s1 and [Ne]4p1? Are the total number of electrons the same? Are the electrons in the same locations? Explain.

  6. No, changing the location of electrons does not change the number of protons which determines the type of element. Check-in: Do you think gold can be made from lead by changing the arrangement of electrons in atoms? Use evidence from this lab to explain.

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