Imagine that you burned an energy bar and it raised the temperature of 525 kilograms of water by 1 degree Celsius. How many Calories were in the energy bar? Explain your answer.

Three alkali metals in group 1 are a. calcium, strontium, barium b. boron, aluminum, gallium c. sodium, potassium, rubidium d. fluorine, iodine, chlorine

Which fact represents evidence for the big bang theory?

In the following table, all the columns for the element calcium are filled out correctly. element electron structure of atom electron structure of ion net ionic charge calcium 1s22s22p63s23p64s2 1s32s22p63s23p64s1 +1 true false