Question

sequence the steps (1 - 4) of separating a mixture of sand, salt, and iron filings. identify which physical property you were using in each step.
mix the sand and salt mixture with water.
physical property used: magnetism of iron
boil the salt and water mixture, leaving the salt behind.
physical property used: solubility of
separate the iron filings from the sand and salt by using a magnet.
use filtration to separate the sand from the salt and water.
physical property used:
science notebook - matter - properties and changes 39

Explanation:

Step1: Separate iron filings first

Separate the iron filings from the sand and salt by using a magnet. Physical property used: Magnetism of iron.

Step2: Mix with water

Mix the sand and salt mixture with water. Physical property used: Solubility of salt in water (salt dissolves, sand doesn't).

Step3: Filter sand

Use filtration to separate the sand from the salt - water mixture. Physical property used: Sand is insoluble and has larger particle size that cannot pass through the filter.

Step4: Evaporate water

Boil the salt - water mixture, leaving the salt behind. Physical property used: Different boiling points, water evaporates leaving salt.

Answer:

1. Separate the iron filings from the sand and salt by using a magnet. Physical property used: Magnetism of iron.
2. Mix the sand and salt mixture with water. Physical property used: Solubility of salt in water.
3. Use filtration to separate the sand from the salt and water. Physical property used: Sand's insolubility and large - particle size.
4. Boil the salt and water mixture, leaving the salt behind. Physical property used: Different boiling points of water and salt.