Multiple Choice
Why is knowing the melting point of a substance useful to scientists?
44
views
1. Intro to General Chemistry
Physical Properties
Struggling with General Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which physical property is most commonly used to separate a mixture of sand and salt?
A
Electrical conductivity
B
Solubility
C
Magnetism
D
Color
Verified step by step guidance1
Identify the components of the mixture: sand and salt.
Consider the physical properties of each component. Sand is generally insoluble in water, while salt is soluble in water.
Understand that solubility refers to the ability of a substance to dissolve in a solvent, such as water.
Use the property of solubility to separate the mixture by adding water, which will dissolve the salt but not the sand.
After dissolving the salt, filter the mixture to separate the sand, then evaporate the water to recover the salt.
Related Videos
Related Practice
Physical Properties practice set
Problem sets built by lead tutorsExpert video explanations