Elements are made up of atoms, and atoms are made up of electrons, protons, and neutrons. Match the charge (+,-,0= positive, negative, neutral) with the electron, proton, and neutron for example, you might write: electron=+ (I'm not saying this is the correct pairing)

Which statement describes the appearance of a temperature-vs.-time graph? a horizontal line shows that the temperature increases at a constant rate over time. a vertical line shows that the temperature decreases at a constant rate over time. horizontal lines where the temperature is constant during phase changes connect upward-sloping lines where the temperature increases. horizontal lines where the temperature increases are connected by upward-sloping lines where the temperature is constant for each phase.

How hot is the suns corona? (integrated science)

What is the percentage of hydrogen in nitrogen trihydride