Question

a geologist concludes that a rock sample is an extrusive igneous rock. based on this information, which statement about the rock is accurate? a) the rock formed from cooling lava. b) the rock cooled slowly over millions of years. c) the rock likely came from a pluton. d) the rock formed within earths crust. question 13 (5 points) two atoms are bonded through the unequal sharing of electrons. which type of bond exists between the atoms? a) polar covalent b) nonpolar covalent

Explanation:

1. For the first question about the extrusive igneous rock: Extrusive igneous rocks form from lava that cools on the Earth's surface quickly. Plutons are related to intrusive igneous rocks that form within the crust and cool slowly.
2. For the second question about the bond between atoms: A polar - covalent bond is formed by the unequal sharing of electrons, while a non - polar covalent bond involves equal sharing.

Answer:

1. A. The rock formed from cooling lava.
2. A. Polar covalent