FOGUETE caseiro de vinagre e bicarbonato de sódio

How to Make a Vinegar and Baking Soda Rocket

Materials Needed

• The project requires two PET bottles of the same size for proper assembly.

• Essential materials include vinegar, baking soda (found in the spice aisle), a cork that fits the bottle's mouth, a piece of string or thread, a coffee filter, and some adhesive tape.

• Cardstock or cardboard is needed for constructing the rocket body; cardstock is preferred for its sturdiness.

Constructing the Rocket

• Start by creating a cone-shaped nose for the rocket using cardstock. Cut out a circle with a 10 cm radius and make cuts from the edge to the center to form a cone.

• Reinforce the tip of the rocket to withstand multiple launches; this ensures durability during repeated use.

• Create stabilizing fins from cardstock. Use double layers for added strength and cut them into specific dimensions (12 cm x 8 cm).

Assembling Components

• After cutting fins, fold them appropriately to create aerodynamic shapes that will stabilize flight.

• Close off any remaining gaps in your fin structure to ensure stability during launch.

• Attach these fins securely onto the body of your rocket using adhesive tape.

Preparing Launch Base

• A second PET bottle serves as a launch base; cut it down to about 10 cm in height for optimal support during launching.

Fuel Preparation

• Prepare fuel by placing one tablespoon of baking soda into a coffee filter and securing it tightly with string. Ensure it's narrow enough to fit into the bottle opening.

• For each launch, fill approximately half of another PET bottle with vinegar as part of your liquid fuel component.

Launching Process

• Combine solid (baking soda capsule) and liquid (vinegar); do not let them mix until ready to launch as this initiates an explosive reaction.

• Carefully place your baking soda capsule into the vinegar-filled bottle without letting it drop immediately; seal quickly with cork after insertion.

Understanding Chemical Reaction

• The experiment illustrates both physical and chemical principles: mixing vinegar (acetic acid solution) with baking soda produces carbon dioxide gas, which propels the rocket upwards due to increased pressure within the sealed container.

How Does a Homemade Rocket Work?

Understanding the Mechanics of the Rocket

• The rocket operates by creating pressure inside a bottle, where gas (not just carbon dioxide) forms and pushes against the cork until it eventually escapes.

• When the cork pops off, water is expelled backward, demonstrating Newton's third law: for every action, there is an equal and opposite reaction, propelling the rocket forward.

• Both homemade rockets (using vinegar and baking soda vs. dry ice) initially have similar mechanics; their ascent speed depends on when the cork releases due to internal pressure.

• The maximum pressure achievable with vinegar and baking soda is lower than that of dry ice; thus, while both can launch similarly at first, dry ice can generate more force if used correctly.

• Caution is advised during experimentation; if too much pressure builds up or materials are improperly sealed, it could lead to dangerous situations upon release.

Safety Tips for Launching Rockets

• It’s recommended to launch rockets in a safe manner—drop them from a height before shaking to avoid accidents during ignition.