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​

Answer 1

removing seed casings from grains

a soda bottle bubbling when it is opened

removing salt from seawater

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(water decomposing to oxygen and hydrogen ) is incorrect

Answer 2

• removing seed casings from grains
• removing salt from seawater
• water decomposing to oxygen and hydrogen
• A soda bottle bubbling when it is opened

Step-by-step explanation:

The mixing and separating actions been performed here involves the options selected, because before their can be separation there has to be some kind of mixing involved .

• Removing seed casings from grains : as a grain crop grows and reproduces its produce which is the grain is attached to a casing that hold the seeds together( mixing ) therefore removing the casings from the grains ( separating ) is an example
• Removing salt from seawater; At sea the water is mixed up with the salt content found/deposited at the bottom of the sea ( mixing ) removing the salt from the seawater ( separating ) is an example as well
• water is made up of hydrogen and oxygen ( mixing ) decomposing water into oxygen and hydrogen is a form of separation
• soda bottle bubbling when it is open is separating the gases used while producing the soda

copper is an element and not a compound so no mixing is involved