The correct answer is <span>D) centrifuge the mixture because the substance with the highter density will be pulled to the bottom
When things spin around, like a centrifuge, the centripetal force draws things towards the middle. If you make it a bit like a spiral and put it sideways, then the denser thing will go to the bottom while the less dense ones will remain on the outside. </span>
Physical properties help identifying a substance and how it changes.
For example: if a substance crushes easily that means it has a low density, but if it’s hard and doesn’t crush easily, that means it has a strong high density.
And eventually the substance would not end up forming a new substance.
Look at the picture below to understand more about physical changes.
Answer : The correct option is, (a) lose electrons and form a positive ion
Explanation :
Metals : These are the elements that easily loose electrons and forms cations.
They require less energy to loose electrons because electrons are loosely bound to the nucleus.
Non-metals : These are the elements that easily gain electrons to form an anion.
They require more energy to loose electrons because the electrons are tightly bound to the nucleus.
As per question, when a metal reacts with a nonmetal, the metal will lose electrons and form a positive ion and non-metal gain electrons and form a negative ion.
Hence, the correct option is, (a)
The pressur in side increases alot because the air has gon down and the temp will increse