Ques: Answer the following question given this paragraph: Q: Particles of matter have the most definite shape in what material state? Choices: - plasma - liquid - gas - solid A:
Ans: solid

Ques: Answer the following question given this paragraph: Sodium and chloride ions have equal but opposite charges. Opposites attract, so sodium and chloride ions attract each other. They cling together in a strong ionic bond. You can see this in row 2 of Figure above . Brackets separate the ions in the diagram to show that the ions in the compound do not share electrons. You can see animations of sodium chloride forming at these URLs:. Q: Why do sodium and chloride ions attract each other? Choices: - sulfides attract - magnetism - like attracts like - opposites attract A:
Ans: opposites attract

Ques: Answer the following question given this paragraph: Some people recover from spinal cord injuries. But many people are paralyzed for life. Thanks to the work of Christopher Reeve ( Figure below ), more research is being done on spinal cord injuries now than ever before. For example, scientists are trying to discover ways to regrow damaged spinal cord neurons. Q: What system is the spinal cord related to? Choices: - circulatory system - lymphatic system - digestive system - nervous system A:
Ans: nervous system

Ques: Answer the following question given this paragraph: The hypothalamus also produces hormones that directly regulate body processes. For example, it produces antidiuretic hormone. This hormone travels to the kidneys and stimulates them to conserve water by producing more concentrated urine. Q: What produces hormones that directly regulate body processes? Choices: - hippocampus - lymph glands - pancreas - hypothalamus A:
Ans:
hypothalamus