A student poured 100 mL of water in a bottle and added 40 mL vinegar to it. A balloon was filled with 20 g baking soda and was fixed at the mouth of the bottle. Slowly the shape of the balloon changed, as shown. The student claims that a chemical change happened when the two substances were mixed. Is the claim made by the student correct?
Choose correct option
No, as the formation of bubbles in the mixture shows a physical change.
Yes, as a new substance was formed in the form of a gas.
No, as the change in the shape and size of the balloon shows a physical change.
Yes, as the mass remains the same throughout the experiment.
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YES AS A NEW SUBSTANCE WAS FORMED IN THE FORM OF A GAS
I THINK THIS IS THE CORRECT ANSWER
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The student's claim that a chemical change happened when the two substances were mixed is correct.
The correct option is: Yes, as a new substance was formed in the form of a gas.
- When baking soda (sodium bicarbonate) is mixed with vinegar (acetic acid), a chemical reaction takes place, which produces carbon dioxide gas, water, and sodium acetate.
- The carbon dioxide gas produced is what inflates the balloon, causing a visible change in the shape of the balloon.
- This is evidence of a chemical change, as a new substance (carbon dioxide gas) has been formed. Additionally, the mass of the system (the bottle, water, vinegar, and baking soda) does not remain constant, as some of the reactants are consumed and new products are formed.
for such more information on mixture
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