What can you say about a calcium atom by looking at the symbol 44/20 ca? a. a calcium atom has 44 neutron s and 20 electrons. b. a calcium atom has 20 protons and 24 electrons. c. a calcium atom has 64 protons and 20 neutrons. d. a calcium atom has 20 protons and 24 neutrons. e. a calcium atom has 20 protons and 44 neutrons.

Uranium can supply energy for the worlds electricity without admitting harmful greenhouse gases which of these statements best describes an outcome of uranium mining

What is a difference between a mixture of elements and a mixture of compounds

Asubstance is held in an open container. its particles move past one another at random speeds but do not leave the container. heat is removed from the system, and the particles slow down. when enough heat is removed, the particles no longer have enough speed to overcome the weak attractive forces between them. when this happens, the substance enters its solid state. the process described above is known as .