1. Gold and copper are only two non-silvery metals

A metal is an element that readily forms positive ions (cations) and has metalic bonds. Most metals' electron reflect colors equally. Gold and copper absord blue and violet light, and leaving yellow light.

2. Glass is just a liquid has flows very slowly

when something cold, abviously shrinks, because of the tempature describes atomic vibration. Water molecule is seems like the oxygen atom are between two hydrogen atom. If the waters freezes, it can realeases energy, beacuse can be made a lot of strong bonds.

3. Graphite and diamond are made only just by carbon

Graphite and diamond are allotropes of carbon, because are arranged differenly in space making of them.

4. 10 inches of snow = 1 inch of rain

If the temprature 0 degrees Celcius, assuming all snow are rainfall. one inch of rain are ten inches of snow.

5. A rubber tire is made by one giant polymerized molecule

Large polymers chains that have been crosslinked together with covalent bonds are made for rubber tire

6. Astatine is the rarest naturally element in the Earth’s crust

The entire crust appears to contain about 28 g of the element. If scientists ever have to use it, they basically have to make it from scratch. Only 0.00000005 grams of astatine have been made so far.

7. DNA is a flame radiant

Its flame retardant properties are due to DNA’s chemical structure when heated, the phosphate-containing backbone produces phosphoric acid, which chemically removes water, leaving behind a flame-resistant, carbon-rich residue. Other bases, such as nitrogen, react to produce ammonia which inhibits combustion.