Harry uses a pulley to pull up a bucket of water from a well. He uses chemical energy in his body to apply mechanical energy to the system. Which of the following energy transformations also occurs as the bucket rises?

Determine the amount of energy absorbed per gram of ice as it melted

Which is the largest atom? A. Bromine (Br) B. Chlorine (Cl) C. Iodine (I) D. Fluorine (F)

The model of the atom where the central core contains protons and neutrons surrounded by a cloud of electrons is best described as A) The Bohr model of the atom. B) The modern model of the atom. C) The plum pudding model of the atom.

Name the alcohol that contains five carbons and has a hydroxyl (alcohol) group on the second carbon.

Which best explains what happens when an electron moves from an excited state to the ground state?

Least reactive element of period 3

A chemical formula shows the kind and number of Atoms that form a what? compound, mixture, solution, or suspension

What gas was used as a deadly posiosn in world war 1?

Four moles of hydrogen chloride (HCl) gas react with one mole of oxygen (O2) gas to produce two moles of chlorine gas (Cl2) and two moles of water gas (H2O).

what noble gas electron configuration is achieved by the bromine atoms in a molecule of BR2, a diatomic element?