Acidobazický roztok

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  • Kyseliny
  • Bases
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  • Bases
  • Solutions
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Description

Jak se liší silné a slabé kyseliny? Pomocí laboratorních nástrojů na vašem počítači to zjistíte! Ponořte papír nebo sondu do roztoku pro změření pH, nebo použijte elektrody pro měření vodivosti. Pak uvidíte, jak koncentraci a účinek ovlivní pH. Má roztok slabé kyseliny stejnou hodnotu pH jako silně kyselý roztok?

Příklady učebních cílů

  • Given acids or bases at the same concentration, demonstrate understanding of acid and base strength by: 1.Relating the strength of an acid or base to the extent to which it dissociates in water 2.Identifying all of the molecules and ions that are present in a given acid or base solution. 3.Comparing the relative concentrations of molecules and ions in weak versus strong acid (or base) solutions. 4.Describing the similarities and differences between strong acids and weak acids or strong bases and weak bases.
  • Demonstrate understanding of solution concentration by: 1.Describing the similarities and differences between concentrated and dilute solutions. 2.Comparing the concentrations of all molecules and ions in concentrated versus dilute solutions of a particular acid or base.
  • Use both the strength of the acid or base and the concentration of its solution in order to: 1.Describe in words and pictures (graphs or molecular drawings) what it means if you have a: Concentrated solution of a weak acid (or base) or Concentrated solution of a strong acid (or base) or other combinations. 2.Investigate different combinations of strength/concentrations that result in same pH values.
  • Describe how common tools (pH meter, conductivity, pH paper) help identify whether a solution is an acid or base and strong or weak and concentrated or dilute.
Version 1.03

Teacher Tips

Učitelská příručka (pdf) obsahuje tipy poskytnuté od členů týmu PhET. ( PDF ).

Teacher-Submitted Activities

Using PhET in High School Chemistry- all my activities in pdf A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. Tento příspěvek byl navržen PhET. Trish Loeblein
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Concept Questions for Chemistry using PhET A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. Tento příspěvek byl navržen PhET. Trish Loeblein ZŠ II.st.

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Acid Concentration and Strength Investigation A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. Tento příspěvek byl navržen PhET. Julia Chamberlain, Susan Hendrickson
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Guided
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Acid Base Solutions - Concentration and Strength A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. Tento příspěvek byl navržen PhET. Trish Loeblein UG-začínající
KOt

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