Question

1. ann created the following diagram to help her understand a chemical reaction.

what are the specific names of each of the following components in the chemical reaction shown above?
a. a - atom, b - molecule, c - compound
b. a - compound, b - atom, c - molecule
c. a - molecule, b - compound, c - atom
d. a - molecule, b - atom, c - compound

1. in 1897, j.j. thomson contributed to the modern atomic theory by using the following apparatus in his experiment.

what is the apparatus that thomson used in his experiment, the results of the experiment, and what did he discover through his experiment?
a. thomson set up the gold foil experiment. the deflection of the ray towards the positively charged plate led to the discovery of electrons.
b. thomson used a cathode ray tube for this experiment. the deflection of alpha particles towards the positively charged plate led to the discovery of the nucleus.

Explanation:

1. In a chemical - reaction diagram, individual small units are atoms, groups of atoms bonded together are molecules, and a substance made of different types of atoms in a fixed ratio is a compound. In the given diagram, A appears to be made of individual units (atoms), B is a group of atoms (molecule), and C is a combination of different atoms (compound).
2. J.J. Thomson used a cathode - ray tube in his experiment. The deflection of the cathode rays (electron beams) towards the positively charged plate led to the discovery of electrons. The gold - foil experiment was done by Rutherford, not Thomson, and it led to the discovery of the nucleus.

Answer:

1. A. A - atom, B - molecule, C - compound
2. None of the given options are completely correct. Thomson used a cathode - ray tube, the deflection of the cathode rays (not alpha particles) towards the positively charged plate led to the discovery of electrons. If we assume the closest correct - like option based on the given choices, it is not among them as the options have incorrect details about the experiment and discovery.