“Over the millennia scientists have concluded that there are a handful of elemental, irreducible ingredients in the universe--space, time, and mass, among them. At a national conference in 1994, philosopher David Chalmers proposed that consciousness also belongs on the list.” 
At first glance it's hard to even comprehend how consciousness/experience is (or could be) an elemental and fundamental aspect of the universe, on par with space, time, mass, etc.
“[w]here there is simple information processing, there is simple experience, and where there is complex information processing, there is complex experience”.
“Instead, we can understand panpsychism as the thesis that some fundamental physical entities have mental states. For example, if quarks or photons have mental states, that suffices for panpsychism to be true, even if rocks and numbers do not have mental states. Perhaps it would not suffice for just one photon to have mental states.” 
“there is something it is like to be a quark or a photon or a member of some other fundamental physical type”. 
“phenomenal (or experiential) properties are properties characterizing what it is to be a conscious subject”.