Take Home Lab #6

Take Home Lab #6: Boyle’s Lab

Question: How do different items react to changes in pressure?

Answer all the questions label Q1 through Q10

Safety: Do not eat or drink any materials. Clean up spills immediately.

Materials: syringe, water, marshmallows, soda

WASH OUT THE SYRINGE AFTER THE CONCLUSION OF THE LAB!

Procedure: In this lab, you will investigate how different substances react when compressed or expanded in a syringe. You will put air, water, marshmallows, and soda in the syringe and make observations.

1. Air: Put your finger over the syringe with the plunger at the halfway point and press down on the plunger.

    Q1: How far were you able to squeeze the air?

With the tip still covered, pull the syringe out as far as you can.

    Q2: How far were you able to expand the air?

2. Water: Fill the syringe with water, trying not to allow any air bubbles. Put your finger over the end of the syringe and press down on the plunger.

    Q3: How far were you able to squeeze the water/

    Q4: Which is more compressible, gases or liquids?

3. Marshamallow: Put a small marshmallow in the syringe. Put your finger over the end.

    Q5: What happens to the marshmallow when you pull out the plunger?

    Q6: What happens to the marshmallow when you push down on the plunger?

    Q7: Explain your observations about the marshmallow.

4. Soda: Put some soda in the syringe and put your finger on the end.

 (be sure the soda isn’t flat before you begin).

     Q8: What happens to the soda bubbles when you push down on the plunger?

    Q9: What happens to the soda bubbles when you pull the plunger out?

    Q10: Explain your observations about the soda. Keep in mind your knowledge about volume and pressure in gases.

BE SURE TO WASH OUT YOUR SYRINGE AFTER YOU FINISH SO YOUR SYRINGE DOES NOT GET STICKY!