Describe the heat involved if you touch a flask containing an on-going endothermic reaction

How do you create Magnesium Sulfide? Write the chemical formula as well

1024 atoms of helium (He) gas, as in a large party balloon, and 1024 atoms of copper (Cu), as in a stack of Cu pennies, are in the same room and thus have the same temperature. Which group of atoms has the most thermal energy?

An atom of strontium has at least four different isotopes. What is different between an isotope of 88Sr and an isotope of 84Sr?

Two components combine to create a binary ionic compound. Name one of them

Draw the electron configuration for a neutral atom of calcium

A substance that permits the flow of electrons is a (n a. conductor b. insulator

The volume, in liters, of 538 g of CO2

9.86 x 10²⁸ O-atoms require what volume (L) N₂O₂ at STP?

What is a group of elements that form salts called

Which number represents an acidic pH, 4 or 9?