How can you tell if a lab thermometer contains mercury, a toxic substance? a. the liquid would appear black. b. the liquid would appear silver. c. the thermometer is made of glass. d. the thermometer is made of plastic.

1. Option B. The liquid would appear silver

2. Option A. The liquid would appear black.

convalent bond :

is a chemical bond formed by the sharing of electron between 2 atoms.

it is the direct chemical bond between 2 atoms.

in bond formation atoms are involved here.

electrovalent bond:

is a chemical bond defined as electroststic attraction between 2 atoms.

it is the electrostatic attraction between 2 atoms.

in bond formation, ions are involved here.

hope it

and ur welcm

: )

i believe it is-

d.) gravity pulled particles of dust and gas together to form planets.