Flashcards and recall.

Try this with Chemistry

1. Write one prompt per card. Use definitions, explanations or examples from your current topic.
2. Answer aloud before turning the card. Split a card if it asks for several unrelated facts.
3. Set aside missed cards and revisit them in a later session.

View Chemistry resources on ATARMAXXING ↗

Recall topics

• How do greenhouse gases affect outgoing radiation?
• Why can increasing atmospheric CO₂ disrupt thermal balance?
• Write the first equilibrium connecting dissolved carbon dioxide and carbonic acid.
• How does carbonic acid supply hydrogen ions?
• Write an ionic equation for acid dissolving calcium carbonate.
• Find pH when [H⁺]=3.20×10⁻⁴ mol L⁻¹.
• At 25 °C, find pH if [OH⁻]=1.00×10⁻³ mol L⁻¹.
• Why can acidification reduce carbonate availability for shells?
• How can nitrogen monoxide form in a hot engine?
• Write the conversion of nitrogen monoxide to nitrogen dioxide.
• How does sunlight contribute to tropospheric ozone formation?
• Give a balanced catalytic-converter reaction removing both CO and NO.
• What does 0.250 mol L⁻¹ mean?
• Convert 0.0200 mol L⁻¹ NaCl to g L⁻¹ using M=58.5 g mol⁻¹.
• Interpret 2.5% w/v.
• When may 1 ppm be approximated as 1 mg L⁻¹?
• Express 4.0 μg L⁻¹ as mg L⁻¹ and approximate ppb in dilute water.
• Why does dilution obey c₁V₁=c₂V₂ for an unchanged solute?
• A 10.00 mL monoprotic acid aliquot needs 25.00 mL of 0.1000 M NaOH. Find acid concentration.
• Why rinse a pipette with the solution it will deliver?
• Why may a conical titration flask be wet with distilled water?
• Distinguish the equivalence point from an indicator end-point.
• What roles do stationary and mobile phases play in chromatography?
• A spot travels 3.6 cm while solvent travels 6.0 cm. Find R_f.
• Why does matching retention time not prove unique identity?
• How can salt concentration affect elution in ion-exchange chromatography?
• Give the ground-state configuration of strontium, atomic number 38.
• What are the maximum occupancies of s, p and d subshells?
• Give the ground-state chromium configuration and its common trap.
• Give the ground-state copper configuration.
• What happens when an atom absorbs an allowed photon?
• How is an emission line produced?
• Why can atomic spectra help identify an element?
• What does atomic absorption spectroscopy measure?
• A calibration is A=0.100c+0.020, with c in mg L⁻¹. Find c at A=0.270.
• The AAS sample giving 2.50 mg L⁻¹ was diluted fivefold. What was the original concentration?
• What makes a collision effective in collision theory?
• Why does increasing concentration often increase reaction rate?
• Why can a temperature rise have more than a collision-frequency effect?
• How does reducing particle size affect a reacting solid?