Question

select all the correct answers. which of these are examples of mixing and separating? - removing seed casings 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 casings from grains is a physical separation of two solid components that were mixed.
• A soda bottle bubbling when opened is the release (separation) of dissolved carbon dioxide gas from the liquid soda mixture.
• Removing salt from seawater is separating a dissolved solid (salt) from a liquid (water) mixture.
• The copper statue turning green is a chemical reaction (not mixing/separation), and water decomposing into hydrogen and oxygen is a chemical decomposition reaction (not a physical mixing/separation process).

Answer:

• removing seed casings from grains
• a soda bottle bubbling when it is opened
• removing salt from seawater