1. at which step(s) pictured on the graph below, does the temperature remain constant? a. melting b. heating liquid c. cooling solid d. condensation

The first element on the periodic table of elements is carbon. a. true b. false

Which position represents spring in the southern hemisphere? a) b) c) d)

Sally is making a model of a magnesium atom with an atomic mass number of 24 for her chemistry class. she has foam balls for the protons, neutrons, and electrons. she has added 6 neutrons to her model so far. how many more neutrons does she need to add to complete her neutral atom of magnesium?