Help Algebraic Equations
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Technology
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Chemistry Chapter 4,25
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Lecture 2 (Chapter 4 & 25) Atomic Structure Democritus (400 BC) ? Postulated there must be some basic unit of matter that could not be divided any further. ? Basic unit ? atomos (Greek = indivisible) Dalton Dalton?s Atomic Theory ? All matter is composed of extremely small particles called atoms ? All atoms of a given element are identical having the ame size, mass and chemical properties. Atoms of a specific element are different from those of any other element ? Different atoms combined in simple whole number ratios to form compounds ? Ina chemical reaction, atoms are separated, combined, or rearranged ? Atoms cannot be created, divided into smaller particles or destroyed. Scientist and Experiments Cathode Ray Tube Experiments ? Plum pudding model ?
A.P Environmental Science Chapter 2
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Chapter Two What is science? Science: ? is a methodical, logical process for producing knowledge about natural phenomena ? a cumulative body of knowledge ----- Table 2.1 : Basic Principles of Science (7) Science depends on skepticism and accuracy ? Ideally scientists are skeptical and un biased. ? Scientist strive for ? Accuracy- correctness of measurement ? Reproducibility- Repeatability of result : Repeating studies or tests is called replication Deductive and inductive reasoning ? Deductive reasoning- logical reasoning from general to specific ? Inductive reasoning- reasoning from many observations to produce a general rule ? It is also important to recognize the role of insight, creativity, aesthetics, and luck in research
QUIZLET FINAL
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e2020 QUIZLET FINAL
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??? ???????? ????? ????????? ????????? ??? ????????????? ? ? ????? ??????????????????? ??? ????? ??? ?????? ???????????? ????????? ??????? ??? ?? ? ??? ????????????????? ????????? ???????? ????????? ??? ???? ???????????????????????? ? ? ??? ???????? ? ????????? ??????? ??????????????????????????????? ??? ????? ????? ??? ????????? ???????? ?????????????? ?? ????????????? ????????? ??? ????!?"?????????????? ???? ????????? ?????????????? ????? ?????? ? ????? ?? ?????????? ???? ??????? ?? ???? ??????????? ??? ?????????? ??????????? ????????? ? ? ???? ??? ?????? ????? ????? ??#????????? ? ? $????? ??%? ??$? ???? ?????? ?????????????? ? ?? ?? ?????? ????????????? ????#??????????????? ?? ? ? $????? ??????????? ??? ??????????!?"????#?? ???????????
Anatomy Chemistry
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Chemistry Notes in Physiology Chemistry notes in Physiology: Atoms Atom?the basic unit of an element An atom consists of subatomic particles: Proton This has a ( + ) charge The number of protons in an atom is called atomic number Neutron This has no charge Electron This has a ( ? ) charge The number of electrons is usually equal to the number of protons ? Both the proton and the neutron are in the nucleus The sum of the proton and neutron is called atomic mass Shell = energy level 1st shell has 2 electrons 2nd shell has 8 electrons Valence electrons are the outermost electrons ? Isotopes = same atomic number, but different atomic mass Isotopes will differ in the number of neutrons For example: Hydrogen has 1 proton Deuterium has 1 proton and 1 neutron
Wiki 2
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wikii
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wiki
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wiki
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Animal Cell Organelle Functions Chart
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Name Function Description Cell Membrane The membrane at the boundary of every cell that acts as a selective barrier regulating the cells chemical composition. Cytoplasm The Cytoplasm offers support to the cell and speeds up inter-cellular travel. It allows the cell to take up 3-dimensional space and the cell's many organelles to "float" freely throughout. Mitochondria Where the cell creates most of the energy (ATP), also known as the ?powerhouse? of the cell. Nucleus This is where all the DNA is kept and translated into mRNA. Golgi Apparatus Stores and sends out proteins using vestical transport. Lysosomes Filled with digestive enzymes, Lysosomes function to get rid of waste and break down large macromolecules. Endoplasmic Reticulum
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hi
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Hi2
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