â¢ Analyzing light from the planet tells us about its atmosphere. Density: We determine a planet's makeup primarily by learning its density. For example, Earth's density is about 5.5 times water's density. So, if we learn that a new planet has about the same density as Earth's, we might guess it is similar to Earth.: Scientists determine a planet's ingredients in several ways, depending partly on how close it is to Earth. Planets within our solar system: For planets like Mars that robots have visited, we analyzed rock and atmospheric samples on the spot. We also measure the planet's magnetic properties.
There is an enormous difference between the physical properties of carbon dioxide and silicon dioxide (also known as silicon(IV) oxide or silica). Carbon dioxide is a gas whereas silicon dioxide is a hard high-melting solid.The other dioxides in Group 4 are also solids.here is an enormous difference between the physical properties of carbon dioxide and silicon dioxide (also known as silicon(IV) oxide or silica). Carbon dioxide is a gas whereas silicon dioxide is a hard high-melting solid.
Best Answer: The chemical formula for quartz is SiO2, or silicon dioxide. Each silicon atom is covalently bonded to 4 oxygen atoms, and each oxygen atom is covalently bonded to 2 silicon atoms. So we have two oxygen atoms for every silicon atom, resulting in an empirical formula of SiO2.