Question

select all the correct answers. which of these are examples of chemical reactions? removing seed coatings from grains a soda bottle bubbling when it is opened a bright copper statue turning green from weathering removing salt from seawater water decomposing to oxygen and hydrogen

Explanation:

• Removing seed coatings from grains is a physical separation process.
• A soda bottle bubbling when opened is due to the release of dissolved carbon - dioxide gas, a physical change related to solubility.
• Removing salt from seawater is a physical separation method like evaporation.
• A bright copper statue turning green from weathering is a chemical reaction (oxidation).
• Water decomposing to oxygen and hydrogen is a chemical reaction.

Answer:

A. removing seed coatings from grains
B. a soda bottle bubbling when it is opened
D. removing salt from seawater