which two rocks are primarily composed of a mineral that bubbles with acid?
The two rocks that are primarily composed of a mineral that bubbles with acid are limestone and dolomite. The mineral that reacts with acid to produce bubbles is called calcite, which is a form of calcium carbonate.
To determine which rocks are composed primarily of a mineral that bubbles with acid, you can perform a simple test using acid vinegar or hydrochloric acid (HCl). Here's how you can conduct the test:
1. First, you need to gather a small sample of the rock you want to test. It should be in small enough pieces to fit into a container.
2. Take a small container and place the rock sample inside.
3. Pour a small amount of acid vinegar or hydrochloric acid onto the rock sample. Be cautious and wear gloves and safety glasses when working with acid.
4. Observe the reaction of the rock with the acid. If you notice immediate bubbling or fizzing, it indicates the presence of calcite, which is the mineral that reacts with acid. This reaction occurs because the acid dissolves the calcium carbonate mineral in the rock.
5. Limestone, which is primarily composed of calcite, will produce a vigorous bubbling reaction when exposed to acid vinegar or hydrochloric acid.
6. Dolomite, on the other hand, contains a mixture of calcium and magnesium carbonates. When dolomite is exposed to acid, it will have a milder and slower reaction compared to limestone.
By performing this simple acid test on different rocks, you can identify which ones are primarily composed of a mineral that bubbles with acid, namely limestone and dolomite.