Rocks are solids that are made of minerals. For example, schist is a rock that may contain the minerals muscovite, chlorite and talc, among others. Obsidian may contain hematite, biotite and other minerals, too. While minerals are pure substances, rocks are not. Not every piece of schist will contain the same minerals bonded in the same way. Think of rocks like cookies with chocolate chips, oatmeal, raisins and walnuts. Minerals are like the ingredients in those cookies: the flour, the sugar, the chocolate, oats, raisins and nuts. Not every cookie will have the same ingredients even if you’re using the same batter. That’s why rocks aren’t pure substances. They’re mixtures. You can’t see every ingredient in a cookie. Likewise, you can’t always see every mineral that makes up a rock. That’s why we can observe and measure minerals to identify them, but it’s harder to do the same for rocks.
Rocks are
A
are always pure substances.
B
made up of different substances.
C
edible like cookies.
D
always made of the same minerals bonded the same way.
Answers
Answered by
1
Answer:
b ) Are made up of different substance
Answered by
1
Explanation:
A rock is any naturally occurring solid mass or aggregate of minerals or mineraloid matter. It is categorized by the minerals included, its chemical composition and the way in which it is formed. Rocks are usually grouped into three main groups: igneous rocks, metamorphic rocks and sedimentary rocks.
Similar questions