Bile
If the pH of the saliva is acidic it demineralizes (break down) the tooth enamel. When this happens, it causes a thinning of the enamel exposing the dentin, bone-like containing microscopic tubules that lead right to the pulp where the nerves are. If the tooth enamel is eroded, consuming hot, cold, or sugary drinks can become quite painful. Symptoms of acidic or unbalanced saliva pH levels are: bad breath, sensitivity to hot and cold, and cavities
I don't think so, mechanical change is when you use something to change the appearance of the object (your Jaw and food for example). Physical change can be caused bye a chemical substance and by and object ( mechanical change ) You welcome :)
Limestone is made mostly of calcium carbonate and calcium sulfate. Limestone is eroded by water as the calcium carbonate and calcium sulfate of the stone disolves into running water. Also a factor: other things dissolved in the water. Carbon Dioxide disassociates in water becoming carbonic acid. This means that the more Carbon Dioxide in the water, the more acidic it is. The more acidic the water, the faster erosion can occur. When acidic ground water packed with lots of carbon dioxide is saturated with minerals - dissolved limestone - and that water enters an air filled chamber, the amount of mineral it can hold can suddenly change. This causes excess mineral to come out of solution as the water drips off the ceiling and onto the floor below into structures called Speleothem. .Think rock Icicle.
When a rock is eroded the particles have to go somewhere. After they are moved (by wind, water, etc.) they will eventually be deposited. These deposited particles are then subject to being eroded again.
Coal can be found on the surface in areas in which the overlying strata have eroded. Coal layers can be exposed in road cuts and on the walls of river valleys. Coal can also be discovered by drilling core samples down from the surface.
By Chemical weathering
Physical
We can use: - mechanical polishing - chemical polishing
Human pollution is generally acidic. Sometimes, the pollution can contaminate rainclouds or other sources of water, forming an acidic liquid. If a rock has contact with this substance, it could be eroded chemically.
Yes, a rock being eroded by wind is just being broken down into smaller pieces. The chemical constituents of the rock remain the same.
What mechanical and chemical weathering have in common is they both break rocks down into smaller and smaller pieces. Eventually the weathered rock will be eroded.
Clastic--formed from eroded rock particles Chemical--formed from the precipitation of chemically saturated solutions.
Clastic: These rocks are composed predominantly of broken pieces of older weathered and eroded rocks Non-clastic/ Organic: A sedimentary rock composed of the remains of plants and animals.
Avoid acidic drinks, foods ( such as lemons). This erodes the enamel and enamel cannot be replaced once it is eroded. Also, Bulemics and Anorexics damage enamel due to the vomiting they do regularly.
Shale is a clastic sedimentary rock formed of clay and silt sized eroded particles that are a result of both physical and chemical weathering. The clay minerals, however are the result of chemical weathering of feldspars.
When sedimentary rock is weathered in nature by chemical or mechanical means, the particles that are produced can be eroded and deposited, becoming sediments.
When sedimentary rock is weathered in nature by chemical or mechanical means, the particles that are produced can be eroded and deposited, becoming sediments.