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3 years ago

Students should come into contact with chemicals only if?

Chemistry

1 answer:

Eva8 [605]3 years ago

3 0

They are properly geared

Explanation:

Students should come into contact with chemical only if they are properly geared.

Chemical are substances produced from the reaction of compounds with one another. Most chemicals are toxic and harmful to the human body.

To handle chemicals, students must be prepared and be properly geared.

It is good to know a chemical before handling it.
Use appropriate apparatus in the laboratory.
Abide with safety rules in laboratories.
Wear laboratory coats at all time.
Wear safety boots.
Wear nose covers to prevent inhalation of harmful gases.
Wear safety googles.
Handle equipment with utmost care.
Do not be careless in the laboratory.
Do not eat, drink or play in the laboratory.

Learn more:

Laboratory brainly.com/question/10896467

#learnwithBrainly

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3 years ago

Are metal and non-metal elements typically ionically bonded? Explain.

victus00 [196]

Answer: Yes, metals and non-metals forms ionic bonds.

Explanation:

Ionic bond is defined as the bond which is formed by complete transfer of electrons from one atom to another atom.

The atom which looses the electron is known as electropositive atom and the atom which gains the electron is known as electronegative atom. This bond is usually formed between a metal and a non-metal.

For Example: Formation of sodium chloride

Sodium is a metal and is the 11th element of periodic table having electronic configuration of $[Ne]3s^1$

To form $Na^{+}$ ion, this element will loose 1 electron.

Chlorine is a non-metal and is the 17th element of periodic table having electronic configuration of $[Ne]3s^23p^5$ .

To form $Cl^{-}$ ion, this element will gain 1 electron.

By criss-cross method, the oxidation state of the ions gets exchanged and they form the subscripts of the other ions. This results in the formation of a neutral compound.

So, the compound formed between sodium and chlorine atom is NaCl

Hence, metals and non-metals forms ionic bonds.

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