Ask a New Question
Menu

Ash is present after a bonfire. Is that a physical change or chemical change there is a sour smelling liquid present and a cup of milk that was left on the counter for three days. Is that evidence of the physical change or chemical change a balloon is much smaller after letting the air out. Is that a physical change or a chemical change There is a loud sound after a firework explodes in the air is that physical or chemical change there is a liquid substance in a pot after putting in a chunk of butter is that a physical or chemical change? There is a brown banana on the counter that was yellow. Is that physical or chemical change

1 answer

Let's analyze each scenario you've presented:

  1. Ash is present after a bonfire: This is a chemical change. The wood burns, and its composition changes to form ash, gases, and other products.

  2. There is a sour-smelling liquid present and a cup of milk that was left on the counter for three days: This is also a chemical change. The milk has undergone fermentation and spoilage, resulting in a change in taste and smell due to bacterial activity.

  3. A balloon is much smaller after letting the air out: This is a physical change. The size of the balloon changes, but no new substances are formed; the air is simply being let out.

  4. There is a loud sound after a firework explodes in the air: This is a chemical change. The explosion involves rapid chemical reactions that produce gases and other products, leading to the loud sound.

  5. There is a liquid substance in a pot after putting in a chunk of butter: This is typically a physical change. The butter melts into a liquid, but the chemical composition remains the same; it's still butter, just in a different state.

  6. There is a brown banana on the counter that was yellow: This is a chemical change. The banana undergoes ripening and oxidation processes, which change its color and taste.

In summary:

  • Ash (chemical change)
  • Sour liquid and spoiled milk (chemical change)
  • Balloon shrinking (physical change)
  • Firework explosion (chemical change)
  • Melted butter (physical change)
  • Brown banana (chemical change)