[Expert Solution]: What does an absorption spectrum show

What does an absorption spectrum show? 1 mark 2. What is the difference between an absorption and an emission spectrum? 1 mark 3. How many absorption lines are present in the hydrogen spectrum? 1 mark 4. Which line is the thickest one in the hydrogen absorption spectrum (in the red, yellow, blue region)? How do you interpret the differences in the width of absorption lines? 2 marks 5. How many absorption lines are present in the helium absorption spectrum? 1 mark 6. Describe the Lithium emission spectrum. Compare it with the Hydrogen one. 2 marks Watch the demonstration : https://www.youtube.com/watch?v=1EXr_L7Ojqg 7. What is the flame colour of potassium ? 1 mark 8. What is the flame colour when strontium? 1 mark 9. Explain why different metals show different flame colours. 2 marks