If both statments are TRUE , mark \" A \" on answer sheet If either statments is
ID: 152920 • Letter: I
Question
If both statments are TRUE, mark "A" on answer sheet
If either statments is FALSE, mark "B" on answer sheet
If both statments are FALSE, mark " C" on answer sheet
CHAPTER 2 11a. Science is best described as a random collection o 11b. The terrestrial ecosystems with net primary the lowest net primary productivity are swamps and marshes. 12a. When scientists are testing ideas to determine facts, they follow a s 12b. Scientific laws differ from scientific theories in that they are tentative pecific set of logical steps. explanations that need further evaluation. 13a. The following sequence is what scientists typically use in the beginning stages of their investigations nature works: indentify a problem search literature develop a hypothesisperform 13b. Matter is anything that has the capacity to do work. e experimentgather and analyze data formulate a conclusion->report findings . 14a. The building blocks of matter are molecules and compounds. 14b. The following compound is an anion: NH 15a. A positive feedback loop reverses the direction the system is going 15b. The atomic mass number is equal to the sum of the protons and neutrons in the atom. 16a. Isotopes differ from each other by their number of neutrons. 16b. lons are atoms or groups of atoms that have gained or lost a neutron. 17a. Heat dispersed in the ocean and the battery that operates your laptop computer are examples of lower 17b. Energy input energy output is the best description of the first law of thermodyn 18a. When matter undergoes a physical change, its size and shape may change, but the arra 18b. The Law of Conservation of Matter states that atoms cannot be created or destroyed. quality energy. atoms remains the same. 19a. The four organic macromolecules are lipids, nucleic acids, proteins, and simple carbohydrates. 19b. Electricity flowing through a wire is an example of potential energy aluminum. Examine the box below which has periodic table information about the element 20a. The atomic number of aluminum is 27 20b. Aluminum has 13 protons and 14 neutrons 13 Al Aluminum 27.0Explanation / Answer
11. Both the option are incorrect, As science is not a random collection of fact, it’s a systematized knowledge derived from observation, study and experimentation in order to determine the nature or the principles of what is being studied. Whereas Swamps and marshes are the zones with higher NPP (Net primary productivity.)
12. Both the statement is correct, When scientists are testing ideas to determine facts they follow a specific set of logical steps and Scientific hypotheses differ from scientific theories in that they are tentative explanations that need further evaluation.
13. First part is correct whereas the second part is not, i.e., the matter is anything that has mass and occupies space and can exist in solid, liquid &/or gas.
14. Both are incorrect as mater is made up of atoms which can be further divided into electron, protons, and neutrons, whereas NH4+ is a cation, as cations are positively charged particle.
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