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F.)-The properties of graphite are:

1.)Its soft in touch.

2.)It is a good conductor of electricity.

3.)Its an opaque substance.

G.-Conductor are those substances through which electricity can flow easily.

Insulators are those substances through which electricity cannot flow.

H.)-

Chemical pollution is defined as the presence or increase in our environment of chemical pollutants that are not naturally present there or are found in amounts higher than their natural background values.

I.)Any three chemical pollutants are:

1.) carbon dioxide

2.)pesticides

3.)Herbicides

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why do the isotopes of a particular element behave differently in nuclear reactions but the same in chemical reactions? chemical reactions involve changes to electrons in an atom; isotopes do not differ in electrons, and so they react the same way during chemical changes.

answer: e.   sour taste

explanation: acids are those substances which dissociates in water to give ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. acids are sour in taste. example: hcl

bases are those substances which dissociates in water to give ions or accepts ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. bases are bitter in taste. bases are slippery in nature.