Susana heats up a sample of red crystals. While the sample was heated a gas is released and a blue powder is left after the heating. Is the sample of red crystals an element or a compound

Explain why pure hydrogen cyanide does not conduct electricity, but become a conductor when it is dissolved in water? (at room temp, pure hcn exists as a volatile liquid)

Which of the following is the correct definition of chemical energy? a. energy an object has because of its motion or position b. energy resulting from the flow of charged particles, such as electrons or ions c. energy produced from the splitting of atoms d. energy stored in chemical bonds of molecules

The point along a planet's orbit where it is closest to the sun is called the