Chapter 7 - Basics Of Chemistry

Question 1

What is the pH scale and how does it work

Answer 1

Measures the potential hydrogen of a substance to tell the degree of acidity or alkalinity on a scale of 0 to 14, it is a logarithmic scale so change of one whole number means a tenfold change

Question 2

Solute vs solvent

Answer 2

Solvent – any substance that dissolves the solute to form a solution
Solute - The substance that is dissolved by the solvent to form a solution

Question 3

Miscible vs immiscible

Answer 3

Miscible – liquids are mutually soluble

Immiscible – liquids are not mutually soluble

Question 4

What is a surfactant

Answer 4

It is used to emulsify oil in water to create an emulsion, able to wet the skin and emulsify oil and water

Question 5

What is an emulsion

Answer 5

Mixtures of two or more immiscible substances united with the aid of an emulsifier, tend to break apart over time but should last at least three years if stored properly