Why does the rocket come back to the ground? Details Activity Length 30 mins. This activity is best done outside or in a large space like a gym that is easy to clean.
Objectives Explore and demonstrate the effects of action and reaction forces. What To Do Part 1: Building the Rocket Make the rocket body: Tape one side of a piece of paper onto the canister, with the open end of the canister exposed.
Roll the paper around the canister to create a tube and fasten it with another piece of tape. Add a nose cone and fins as desired: Hint: There is no one right way to make a paper rocket. Try a long, skinny rocket or a short, fat rocket. Try a sharp nose cone or a blunt nose cone. Try it with fins or without fins. If the water and alka-seltzer are in a tightly sealed container, the gas will expand rapidly, filling the container, which can lead to some fun experiments.
Pour oil, water, and food coloring into a jar or water bottle. The colored water will sink, the oil will float. Then add an alka seltzer tablet, which sinks to the bottom, then starts releasing bubbles. The bubbles carry water up with them, then when the bubble pops, the colored water sinks back to the bottom of the bottle. This experiment is infinitely re-useable. Any time you want more bubbles, just add another Alka-Seltzer.
In my Chemical Reactions post, I illustrate how to mix vinegar and baking soda in a bottle, then put a balloon over the top of the bottle — the gas from the chemical reaction inflates the balloon. You could do this with water and an Alka-seltzer tablet in the bottle. Demo of Signs of a Chemical Reaction : Put 2 — 3 tablespoons of water and a tablet of alka-seltzer in a zip-lock baggie. Seal it — ask kids what they see — bubbles.
Endothermic reaction. Explosion : Ask the kids what might happen if you put more tablets in a baggie of water. Test it. Put in tablets, seal the bag, set it inside a big plastic tub. This is similar to the ziplock time bombs I describe in the Chemical Reactions post. First, you need film canisters. If you order after using that link, I do get a small referral fee. Break Alka-Seltzer tablets up into quarters.
Fill the canister halfway with water. Drop in two quarter-tablets. Seal the canister. Back away. As soon as enough pressure builds, the canister will blow off the lid, launching up to 20 feet in the air with a great popping sound! This MUST be done outside. We tried to blow up a balloon with popping candy with some interesting results, but baking soda and vinegar would be another good investigation.
Did you know Alka Seltzer contains contain sodium bicarbonate baking soda and citric acid? When you drop a tablet into water it forms sodium citrate, water and carbon dioxide which is the bubbles of gas you see. The bicarbonate of soda reacts with the citric acid, this is an acid — base reaction just like we see when we add vinegar to baking soda. If you place an acid and a base together, they react to neutralise each other, producing a salt.
Make a fizzy lava lamp. These are great as they can be used over and over again. This is what sends the canister into the air like a rocket! So much fun! Capturing an Alka Seltzer rocket on camera is not easy since I was the only adult. However, I can tell you that the laughter, pointing, and jumping up and down from my son is proof enough. You may even go through a whole package. Looking for easy to print activities, and inexpensive problem-based challenges?
Science experiments with ordinary items are the best! Click on the image below or on the link for more fun science experiments for kids. Menu Skip to main content Skip to primary sidebar. What we are using is actually from the dollar store and sold in packages of
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