Chemistry GCSE

9 flashcards · Other · by R A F I

1. What is the test for Oxygen?

   1. Insert glowing splint into gas 2. If oxygen is present splint will relight

2. What is the test for Hydrogen?

   1. Insert lit splint into gas 2. If hydrogen is present, it will make a 'squeaky pop' sound

3. What is the test for Carbon Dioxide?

   1. Bubble gas through limewater 2. If CO₂ is present limewater turns cloudy or milky

4. What is the test for Chlorine?

   1. Hold damp blue litmus paper near gas 2. If chlorine is present, it will turn red then white

5. What colour does the flame test for Lithium (Li+ ) go?

   Crimson

6. What colour does the flame test for Sodium (Na+ ) go?

   Yellow

7. What colour does the flame test for Potassium (K+ ) go?

   Lilac

8. What colour does the flame test for Calcium (Ca²+ ) go?

   Orange-red

9. What colour does the flame test for Copper (Cu²+ ) go?

   Green