Answer the following question given this paragraph: Liquids have a definite volume, but no definite shape. A gallon of milk will keep the same volume whether it is stored in a one-gallon milk jug or a ten-gallon barrel. The volume is the same, but the fluid will either fill the jug or spread out over the bottom of the barrel. Q: What state of matter has a definite volume, but not a definite shape? Choices: - gas - solid - mixture - liquid A:
liquid
(Question)
Answer the following question given this paragraph: The emission spectrum of hydrogen is discontinuous. The spectrum is made up of discrete lines representing transitions of the hydrogen electron between specific energy levels within the atom. Q: The spectrum is made up of discrete lines representing transitions of the hydrogen electron between specific energy levels within what? Choices: - a rainbow - an element - the molecule - the atom A:
(Answer)
the atom
Ques: Answer the following question given this paragraph: Q: What takes the shape of the container they are placed in and have a definite volume? Choices: - gases - solids - loads - liquids A:
Ans: liquids
(Q).
Answer the following question given this paragraph: Organisms are not independent, they are interdependent . They cannot live alone; they need other organisms to survive. The same is true for species. All species need other species to survive. Q: Organisms cannot live alone, needing other organisms to survive; what is this relationship called? Choices: - coexistence - independence - dominance - interdependence A:
(A).
interdependence
Ques:Answer the following question given this paragraph: In the study of thermochemical processes, things are viewed from the point of view of the system. A chemical reaction or physical change is endothermic if heat is absorbed by the system from the surroundings. In the course of an endothermic process, the system gains heat from the surroundings and so the temperature of the surroundings decreases. The quantity of heat for a process is represented by the letter . The sign of for an endothermic process is positive because the system is gaining heat. A chemical reaction or physical change is exothermic if heat is released by the system into the surroundings. Because the surroundings is gaining heat from the system, the temperature of the surroundings increases. The sign of for an exothermic process is negative because the system is losing heat. Q: If heat is released by the system into the surroundings, a chemical reaction or physical change is called what? Choices: - static - endothermic - biochemical - exothermic A:

Ans:exothermic
Ques: Answer the following question given this paragraph: Evolution is a change in the characteristics of living things over time. Evolution occurs by a process called natural selection. In natural selection , some living things produce more offspring than others, so they pass more genes to the next generation than others do. Over many generations, this can lead to major changes in the characteristics of living things. Evolution explains how living things are changing today and how modern living things have descended from ancient life forms that no longer exist on Earth. Q: What is the change of characteristics of living things over time? Choices: - spontaneous mutation - adaptation - generation - evolution A:
Ans:
evolution