No, melting a chemical change is not a change in the chemical composition of the material. Why do pennies turn green? There are many reasons pennies turn green, but one of the most common is when they are wet. Pennies are made of a metal that corrodes when it comes in contact with salt and ... Read more...
There are many opinions on whether or not Harvard Extension School is respected. Some people believe that it is a great institution, while others believe it is not. How can I improve my writing skills? The best way to improve your writing skills may vary depending on your individual circumstances. However, some tips that may ... Read more...
Theropoda dinosaurs, such as the tyrannosaur and the azhdarchid, had very large and sharp teeth, capable of cutting through most types of prey. Are crocodiles dinosaurs? Crocodiles are not dinosaurs. Crocodiles are the only species of crocodile that has the ability to lay eggs. Dinosaur eggs are not able to lay eggs. What Colour is ... Read more...
New Zealand is located in the southern hemisphere, on the east coast of the South Pacific Ocean. What are all the oceans called? The oceans are called the "Great Lakes" because they are all in Canada. The oceans are also called the "Pacific" and "Atlantic" oceans because they are divided into these two types of ... Read more...
A solid is a material that can be held in a certain position by its weight and cannot move. Which of the following Platonic solids is made from triangles? The Platonic solids are made from triangles. The three Platonic solids are the cube, the tetrahedron, and the octahedron. Which pairs of Platonic solids are duals? ... Read more...