The material is a gas at room temperature, so we can't give it the push test. Learn that H s one proton is different from those of other atoms because it is pulling on electrons in the very small Shell 1. Experimental data shows it exerts about the same force on bond electrons as the 4 effective protons of carbon because CH4 is essentially non-polar, as indicated by its 161 C boiling temp. ID-ID forces are very short range. They are only effective between directly neighboring atoms.
Plastics resist push enough to be sturdy solids.
They aren t as heat-resistant as diamond. Some start to decompose as low as 300 C. Read Sec 18.3 15. Learn that the wavelength range for visible light is in the range of the length spanned by about 3000 atoms. Light can t get gulped by objects smaller than its wavelength. Grains of sugar are much larger than the length spanned by 3000 atoms, so they reflect light and are seen.