Question

Which ones can be separated into simpler parts by physical methods ? a)water   b)oil+water        c)Fe,C        d)HCl             ​

Answer 1

Ответ:

b) oil+water    

Объяснение:

They have different densities

the oil is less dense and will rise above the water

Answer 2

Physical methods are used to separate substances based on their physical properties, such as differences in solubility, density, size, etc. Let's go through each of the options:

a) Water: Water can be separated from other substances through physical methods like filtration, distillation, or evaporation. These methods take advantage of differences in boiling points, solubility, or particle size to separate water from impurities.

b) Oil + Water: Oil and water can be separated using methods like decantation, where the less dense oil can be poured off the top of the water, or by using a separating funnel. Centrifugation can also be used to separate immiscible liquids like oil and water.

c) Fe, C (Iron and Carbon): Iron and carbon are both elements and cannot be physically separated into simpler components through typical physical methods. However, if the iron and carbon are part of a mixture, they might be separated using methods like magnetism (for iron) or by exploiting differences in density or solubility.

d) HCl (Hydrochloric Acid): Hydrochloric acid (HCl) is a single chemical compound consisting of hydrogen and chlorine. It cannot be separated into simpler components using physical methods.

So, the options that can be separated into simpler parts by physical methods are:

• Water (Option a)
• Oil + Water mixture (Option b)
• Fe and C if they are part of a mixture (Option c)

HCl (Option d) is a compound and cannot be separated into simpler parts through physical methods.