<h3>Because it is harmful for school environment.</h3>
Potassium Metal Is Explosive— Do Not Use It! The reaction of sodium with water is a spectacular and essential classroom demonstration. Many teachers want to show also the more violent reaction of potassium. We propose not to do so because explosions can happen even before the metal is in contact with water.
<em>-</em><em> </em><em>BRAINLIEST</em><em> answerer</em>
Answer:
physical properties
Explanation:
temperature, volume and colour are all physical properties
To the blue column on extreme left (group-1) drag and put ALKALI METALS.
To the orange column (group-2) write down Alkaline earth metals
To the next parrot green column (from group 3 to group 12) write down transition metals.
From group 1 to 12 write metals
The yellow part is non metals
The pink last column (group 18)is noble gas
The peach colored is metalloids.
A joule is equivalent to 0.000239006 kilo calories.
A newton times a meter is 1 joule.
A newton divided by a meter is a pascal.
A newton divided by a second is 1 m kg / s^<span>3.
A newton times a second is </span><span>1 m kg / s.</span><span>
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