Atomic composition Study guides, Class notes & Summaries

Biol 1201 Exam 1 (Gregg) with Complete Solutions plasma membrane The membrane at the boundary of every cell that acts as a selective barrier, thereby regulating the cell's chemical composition. Ribosomes complexes that make proteins; free in cytosol or bound to rough ER or nuclear envelope Golgi apparatus active in synthesis, modification, sorting, and secretion of cell products Lysosome digestive organelle where macromolecules are hydrolyzed, and autophagy Mitachondrion org...

atomic number CORRECT ANSWER The same as the number of protons in the nucleus of an element; it is also the same as the number of electrons surrounding the nucleus of an element when it is neutrally charged. mass number CORRECT ANSWER The sum of an atom's neutrons and protons isotopes CORRECT ANSWER Atoms of an element with different numbers of neutrons Avogadro's number CORRECT ANSWER 6.022×10²³ particles per one mole Moles CORRECT ANSWER grams/molar mass Standard Temperatur...

TEST BANK FOR BIOLOGY 13TH EDITION BY PETER RAVEN | REAL EXAM QUESTIONS AND ANSWERSWITH RATIONALE LATEST UPDATE Biology, 13e (Raven) Chapter 2 The Nature of Molecules and the Properties of Water 1) Matter is composed of: A) atoms B) energy C) mass D) molecules Answer: A Section: 02.01 Topic: The Nature of Atoms Bloom's: 1. Remember LO: 02.01.01 Define an element based on its composition. Accessibility: Keyboard Navigation 2) All atoms possess the ability to do work. The term...

MATTER Atomic Structure, Isotopes, Ions, and the Periodic Table Ans- a substance that has mass and occupies space. SUBSTANCE Atomic Structure, Isotopes, Ions, and the Periodic Table Ans- matter that has the same composition and properties throughout ELEMENT Atomic Structure, Isotopes, Ions, and the Periodic Table Ans- any substance that cannot be broken down into simpler substances. Identified by its symbol and its atomic number. ATOMIC NUMBER Atomic Structure, Isotopes, Ions, and the...

Stiochiometry correct answer: Greek "Stiochion"= element "Metion"= measure Lavoisier correct answer: Mass is conserved in chemical rxn 2 parts of equation correct answer: Reactant and product Chemical equation for formation of water correct answer: 2H₂+O₂→2H₂O Stiochiometric coefficients correct answer: # in front of chemical formulas; give ratio of reactant and products Law of Conservation of Mass correct answer: Antione Lavoisier Matter cannot be lost in any...

What is the term used for findings that are summarized based on a pattern or trend? a. Law b. Hypothesis c. Theory d. Phenomena e. Prediction - Answer a. Law Which of the following is a tentative explanation for a set of observations? Select one: a. Law b. Hypothesis c. Theory d. Phenomena e. Prediction - Answer b. Hypothesis If a liquid contains 60% sugar and 40% water throughout its composition then what is it called? Select one: a. Solute b. Compound c. Homog...

MATTER Atomic Structure, Isotopes, Ions, and the Periodic Table Ans- a substance that has mass and occupies space. SUBSTANCE Atomic Structure, Isotopes, Ions, and the Periodic Table Ans- matter that has the same composition and properties throughout ELEMENT Atomic Structure, Isotopes, Ions, and the Periodic Table Ans- any substance that cannot be broken down into simpler substances. Identified by its symbol and its atomic number. ATOMIC NUMBER

Mixture with uniform density throughout and no distinguishable coponents.Answer - Homogeneous Mixture Mixture in which the components are readily distinguished.Answer - Heterogeneous Mixture A change in which the checmical composition of a substance remains the same.Answer - Physical Change A change in which the chemical bonds are broken and reformed to create a new and different substance.Answer - Chemical Change The simplest of substances and is represented by a specific letter...

Multiple Choice Questions 1. Chemistry deals with A. the composition and changes of substances that make up living as well as non-living matter. B. the composition and changes of substances found in organisms only. C. the composition of and changes of substances that make up non-living matter only. D. the location of organs in body cavities. Bloom's Level: 2. Understand Learning Outcome: 02.01 Topic: Chemistry 2. Chemistry is important to the study of physiology because A....

Density CORRECT ANSWER mass / volume Conversion from celsius to kelvin CORRECT ANSWER K = DegC + 273.15 Conversion from DegF to DegC CORRECT ANSWER DegC = (5/9) (DegF - 32) Conversion from DegC to DegF CORRECT ANSWER DegF = (9/5)(DegC) + 32 Intensive properties CORRECT ANSWER Independent of amount of matter examined Extensive propertires CORRECT ANSWER Dependent of amount of matter examined Alcohol CORRECT ANSWER compund in which an H atom of a hydrocarbon is replaced by an OH ...