If the question is multiple choice the answer would be:
2) 2
Answer:
Advantages :they are used for seeing chemical reactions .
they are used for doing chemical experiment .
they are used for making affective medicines .
Disadvantages :they harms to our environment.
they can make side effects in our body by affective medicines made by chemicals.
while doing different unknown experiments they make explosions which can also harm to us.
Metallic bond is the electrostatic attraction between a positive ion and delocalised(free)electrons
Answer:
Solute
Explanation:
A solvent is what the solute is being put in in order to dissolve
