Question: Q: Scientists think that stars and galaxies make up only a small part of the matter in the universe. what is the rest of the matter called? Read this paragraph and choose the correct option from the provided answers: We see many objects out in space that emit light. This matter is contained in stars, and the stars are contained in galaxies. Scientists think that stars and galaxies make up only a small part of the matter in the universe. The rest of the matter is called dark matter . Choices: - typical matter - light matter - cold matter - dark matter A:
Answer: dark matter

Question: Q: What kind of energy is released when the thermochemical reaction of a campfire converts wood to carbon dioxide and water? Read this paragraph and choose the correct option from the provided answers: A camp fire is an example of basic thermochemistry. The reaction is initiated by the application of heat from a match. The reaction converting wood to carbon dioxide and water (among other things) continues, releasing heat energy in the process. This heat energy can then be used to cook food, roast marshmallows, or just keep warm when it's cold outside. Choices: - ultraviolet - light - smoke - heat A:
Answer: heat

Question: Q: What property of certain states of matter can be given in units of millimeters of mercury? Read this paragraph and choose the correct option from the provided answers: Pressure is given in units of millimeters of mercury. We can either convert this to atmospheres or use the value of the ideal gas constant that includes the mmHg unit. We will take the second option. Substituting into the ideal gas law,. Choices: - solvency - gravity - velocity - pressure A:
Answer:
pressure