What is occurred when energy is taken in or given off

The nuclear fission process releases neutrons and a. alpha particles b. electrons c. energy d. beta particles

Which element is present in all organic compounds? a. carbon b. hydrogen c. nitrogen d. oxygen?

For most compounds in which a nitrogen atom bears no formal charge, the valence of this nitrogen atom is

List four possible clues to a chemical change

Methanol (CH3OH) and Ethylene Glycol (C2H6O2) are considered non-electrolytes A) True B) False

Which has more atoms, 2moles of carbon or 2 moles of aluminum

At 100 degrees c, water reacts with acetic anhydride to make acetic acid. also, at 100 degrees c, water reacts with acetylsalicylic acid and reverts it to salicylic acid and acetic acid.

What is the valence electron configuration of the group 2a elements?

Which of the following statements about monosaccharide structure is true? A) Aldoses and ketoses differ in the position of their hydroxyl groups. B) Monosaccharides can be classified according to the spatial arrangement of their atoms.

Examples of chemical and physical changes