Platforms
A number of substances and their chemical formulas are listed below. Check the ones that are compounds.
Brass is a combination of a number of elements. Its exact composition can vary.
Describe the best method for separating a mixture of sand, salt, and steel shavings by placing the steps below in the correct order. Heat the mixture to evaporate the water.
4
Pour the mixture through a filter to separate the sand.
3
Pass a magnet over the mixture to remove the steel.
1
Add water to the sand/salt mixture and stir to dissolve the salt.
2
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Instruction
The Structure of the Atom