Q: Answer the following question given this paragraph: Temperature affects the solubility of solutes in all three states. Pressure also affects the solubility of gases. Q: What is the factor that affects the solubility of solutes in all three states? Choices: - oxygen - color - heat - temperature A:
A: temperature

Q: Answer the following question given this paragraph: All chemical reactions, even exothermic reactions, need activation energy to get started. Activation energy is needed to bring reactants together so they can react. Q: What do all chemical reactions need to get started? Choices: - expression energy - kinetic energy - potential energy - activation energy A:
A: activation energy

Q: Answer the following question given this paragraph: One type of molecular compound behaves quite differently than that described so far. A covalent network solid is a compound in which all of the atoms are connected to one another by covalent bonds. Diamond is composed entirely of carbon atoms, each bonded to four other carbon atoms in a tetrahedral geometry. Melting a covalent network solid is not accomplished by overcoming the relatively weak intermolecular forces. Rather, all of the covalent bonds must be broken, a process that requires extremely high temperatures. Diamond, in fact, does not melt at all. Instead, it vaporizes to a gas at temperatures above 3500C. Q: What is a compound in which all of the atoms are connected to one another by covalent bonds? Choices: - covalent bond element - covalent mixture - compound metal - covalent network solid A:
A: covalent network solid

Q: Answer the following question given this paragraph: In displacement versus time graphs, the slope of the line is the velocity of the object. In this case of a velocity versus time graph, the slope of the line is the acceleration. If you take any segment of this line and determine the to ratio, you will get 6.0 m/s 2 which we know to be the constant acceleration of this object. Q: When two of these meet, the result is often a storm? Choices: - air pockets - electromagnetic waves - tectonic plates - air masses A:
A: air masses