A mixture of vegetable oil and water will separate into layers because oil is 0

Question

A mixture of vegetable oil and water will separate into layers because oil is 0 a. hydrophilic, polar associations O b. hydrophobic; nonpolar associations O c. hydrophilic; nonpolar associations O d. hydrophobic; ionic associations and forms e. hydrophobic; polar associations The smallest unit that retains the chemical and physical properties of an element is a(n)- O a' molecule @ b. atom O c. compound O d. proton @ e. neutron . When added to water, a base will act as a(n), and cause the pH of the solution to D a proton donor; fall .

Explanation / Answer

1.Answer (b).

Reason: A mixture of vegetable oil and water will separate in to layesrs because oil is hydrophobic and it forms nonpolar associations. As a rule of 'like dissolves like', hydrophilic or polar molecules dissolves in water. Here oil is hydrophobic, and nonpolar, so it doesn't mix with water and forms layers.

2. Answer (b)

Reason: Atom is the smallest particle of an element, which retains the chemical and physical properties of an element. molecules and compounds are formed by combining two are more atoms. In atoms there are many subparticles like electron, proton, neutron etc. These subparticles don't retain the physical and chemical properties.

3. Acid gives H+ ions and base gives OH- ions. Neutral water pH is 7. According the water reference, pH scale below 7 represents acids, above 7 represents bases. When we add base to the water, base generates OH- ions and the resultant solution pH increase.

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