Nicoleebel1386

05.10.2020 • 

Chemistry

It is an IXL question again,What do these two changes have in common? filtering air to remove dust and pollen
mixing sand and gravel
Select all that apply. It is multi answers: answer 1:Both result in a different type of matter than before. 2:both are caused by heating. 3:both are physical changes 4:both are chemical changes

Ответ:

Kurlyash

04.02.2021

Chemistry

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C

Explanation:

I think this is it because quarks come together to form protons and neutrons.. hope it works

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