For the love of god answer these questions for it’s urgent.
1. some igneous rock forms from magma that cools slowly within earth’s crust. briefly describe the most likely crystallization and texture of the rock.
2. other igneous rock forms from lava that cools quickly on earth’s surface. classify the rock as either intrusive or extrusive, and identify another word used to describe this type of rock.
3. you are studying a sample of igneous rock. the rock formed on the surface of earth. it’s made mostly of light-colored minerals. the sample has just a few specks of dark-colored minerals. classify the rock by type and composition.
4. you are studying a sample of igneous rock. the rock formed within earth’s crust. the sample contains a very high concentration of dark-colored, high-density minerals. classify the rock by type and composition.
5. a scientist shows you a sample of rock called gabbro. the scientist explains that gabbro is an intrusive mafic igneous rock. explain what this means.

Igneous rock that forms from magma that cools slowly within Earth’s crust is likely to have larger crystals and a coarse-grained texture.

Igneous rock that forms from lava that cools quickly on Earth’s surface is known as extrusive igneous rock. Another word for extrusive is volcanic.

Because the sample of igneous rock formed on Earth’s surface, it is extrusive. Because it’s composed of mostly light-colored minerals, it is likely felsic.

Because the sample of igneous rock formed within Earth’s crust, it is intrusive. Because it contains a very high concentration of dark-colored, high-density minerals, it is likely ultramafic.

The fact that gabbro is an igneous rock suggests that it was formed from the cooling and crystallization of magma. The fact that it is intrusive means that it formed within Earth’s crust. The fact that it’s mafic suggests that it contains a high concentration of dark-colored, high-density minerals.

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.