Question

How can rocks be distinguished from each other?

Their shape can distinguish rocks.
All types of rocks have different density.
Different types of rocks have different chemical composition.
Each type of rocks is different in color.

Answer 1

Rocks can be distinguished from each other based on their shape, density, chemical composition, and color.

Step-by-step explanation:

Rocks can be distinguished from each other based on various characteristics:

1. Shape: Rocks can have different shapes such as rounded, jagged, or smooth.
2. Density: Different types of rocks have different densities. For example, igneous rocks like granite are generally denser compared to sedimentary rocks like sandstone.
3. Chemical Composition: Each type of rock has a different chemical composition. This can be determined by analyzing the minerals present in the rock.
4. Color: Rocks can vary in color due to different minerals and impurities present in them.

Answer 2

Different types of rocks have different chemical composition.

Step-by-step explanation:

Rock can be distinguished from each other by their chemical composition which is a product of the minerals they contain.

• A rock is an aggregate of minerals.
• Different suites of rocks have their inherent mineralogical composition and facie.
• This is because, these rocks form under different types of conditions from time to time.
• Igneous rocks form from molten rocks, sedimentary rocks form from pre-existing rocks and metamorphic rocks for under elevated temperature and pressure conditions.
• All these conditions plays important roles in the differentiation of minerals in the rock.