NaHCO3 (aq) + CH3COOH (aq) —> NaCH3COO (aq) + H2O (l) + unknown gas 1. list the elements for the given reactants and the number of atoms lf each. list the elements for the given product and the number of atoms of each. based on the difference in thr number of atoms between the reactants and products, predict the unknown product.

2. calculate the temperature change of the solution. did the temperature increase or decrease?

3. was the reaction endothermic or exothermic? explain ur answer

4. what two things happened during the reaction that indicates a chemical reaction occured?

Imagine if during the cathode ray experiment, the size of the particles of the ray was the same as the size of the atom forming the cathode. which other model or scientific observation would have also been supported? 1. this would support dalton's postulates that proposed the atoms are indivisible because no small particles are involved. 2. this would support bohr's prediction about electrons moving in orbits having specific energy. 3. this would support bohr's prediction about electrons being randomly scattered around the nucleus in the atom. 4. this would support dalton's postulates that proposed that atoms combine in fixed whole number ratios to form compounds.