Answer the following question given this paragraph: All solutions contain at least two substances. Q: All solutions contain at least how many substances? Choices: - one - four - three - two A:
two
Answer the following question given this paragraph: Figure 14.7 (a) Energy is required to partially overcome the attractive forces between molecules in a solid to form a liquid. That same energy must be removed for freezing to take place. (b) Molecules are separated by large distances when going from liquid to vapor, requiring significant energy to overcome molecular attraction. The same energy must be removed for condensation to take place. There is no temperature change until a phase change is complete. Q: What is required to partially overcome the attractive forces between molecules in a solid to form a liquid? Choices: - fuel - hydrogen - oxygen - energy A:
energy
Q: Answer the following question given this paragraph: REVIEW QUESTIONS 2. Magnesium has an atomic number of 12. Which of the following statements is true of a neutral magnesium atom? a. Q: What is the atomic number of magnesium? Choices: - 17 - 25 - 8 - 12 A:
A: 12
Question: Answer the following question given this paragraph: The presence of solute particles blocks some of the ability for liquid particles to evaporate. Thus, solutions of solid solutes typically have a lower vapor pressure than the pure solvent. Q: The presence of solute particles blocks some of the ability for liquid particles to do what? Choices: - melt - fuse - dissolve - evaporate A:
Answer: evaporate
*Question*
Answer the following question given this paragraph: Three main types of particles that make up all atoms are protons, neutrons, and electrons. Q: Which state of matter is characterized by molecules with minimal movement and strong forces between them? Choices: - plasma - liquid - gas - solid A:
**Answer**
solid
*Question*
Answer the following question given this paragraph: Q: The e. coli chromosome, like many other bacterial chromosomes, is what shape? Choices: - oval - square - triangular - circular A:
**Answer**
circular