Consider the statement below. “When nitrogen is liquefied, heat is released.” Is this statement true or false? It is false because nitrogen absorbs heat when it is liquefied. It is false because nitrogen cannot absorb enough heat to liquefy. It is true because heat is released when a gas changes to a liquid. It is true because heat is released when a liquid changes to a gas.

The crust of earth may a- continets and ocean floors. b-continents only. c-layers of sedimentary rocks and continents. d-all of the above

Reactions in cells take place at about a. 40°c b. 0° c. 100°c d. 60°c

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.