Multiple choice

What evidence shows that carbon dioxide gas is produced when the egg is put in the vinegar?

  1. bubbles are produced

  2. the temperature increases

  3. the temperature decreases

  4. the eggshell hardens
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Carbon dioxide is a gas, and its production during the chemical reaction between vinegar and the eggshell is visible as bubbles forming on the surface of the egg. The other options describe temperature changes or physical hardening, which are not direct evidence of gas production.

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