Obsidian is a type of igneous rock. How do igneous rocks form? from the cooling of magma

from the modification of existing rock

from the cementing of sediments

from the evaporation of waterObsidian is a type of igneous rock. How do igneous rocks form?(1 point)

from the cooling of magma

from the modification of existing rock

from the cementing of sediments

from the evaporation of water

What type of energy do chemical bonds have? what type of energy is it converted to during chemical reactions? question 15 options: chemical bonds have kinetic energy, which is converted to potential energy during chemical reactions. chemical bonds have electric energy, which is converted to potential energy during chemical reactions. chemical bonds have heat energy, which is converted to kinetic energy during chemical reactions. chemical bonds have potential energy, which is converted to heat energy during chemical reactions.

Asolid that forms and separates from a liquid mixture is called

An atom with 7 protons, 6 neutrons, and 7 electrons has an atomic mass of amu. (enter a whole number.) numerical answers expected! answer for blank 1: