Which of the following statements best describes an element?
Question 5 options:
a material that has consistent chemical properties |
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a material that has consistent physical properties |
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a material consisting of only one type of atom |
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a material that is pure |
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a material with more than one type of ato |
Which of the following statements best describes an element? Question 5 options: a material that has...
10) Which of the following statements best describe the expected properties or applicability of a material A that has an appreciably higher coefficient of thermal expansion than that of material B? a) A has stronger interatomic bonding than B does b) A has a weaker interatomic bonding than B does c) A has a higher melting temperature than B does d) A will be more desirable than B in applications where dimensional stability is important e)...
Which one of the following properties describes a liquid? Question 5 options: fills the entire volume of the container has its own shape particles are very close together and move randomly particles move very rapidly around stationary positions There is essentially no interaction between the particles.
D Question 19 2 pts Which of the following statements best describes the primary role played by oxygen in cellular respiration? It yields energy in the form of ATP as it is passed down the electron transport chain. It serves as an acceptor for carbon, forming CO2 in the citric acid cycle. It oxidizes glucose to form two molecules of pyruvate. It serves as the final acceptor for electrons from the electron transport chain. Question 20 2 pts Which of...
Which of the following statements best describes the optical element hidden by the black box in the diagram given the behavior of the parallel rays of light incident on it? A) The black box must contain a concave lens. B) The black box must contain a convex lens. C) The black box must contain a flat piece of glass. D) The black box must contain a convex mirror. E) The black box must contain a plane mirror. Which of the...
QUESTION 5 Which of the following statements best describes the role NaOH plays in the synthesis of aspirin? None of these. It acts as a catalyst. It reacts with the acid. It makes the reaction exothermic. It helps to speed up the reaction. It helps to slow down the reaction.
Which of the following best describes London dispersion forces. Question 1 options: the intermolecular forces that exist when ions from an ionic compound are attracted to the dipole of polar molecules in a mixture. involves molecular orientations in which the positive end of one dipole is near the negative end of another forces that exist only between molecules that contain hydrogen atoms bonded to highly electronegative atoms such as O, N, F. Interactions between temporary dipoles cause atoms to be...
Which of the following statements best describes the optical element hidden by the black box in the diagram given the behavior of the parallel rays of light incident on it? A) The black box must contain a concave lens. B) The black box must contain a convex lens. C) The black box must contain a flat piece of glass. D) The black box must contain a concave mirror. E) The black box must contain a convex mirror. Which of the...
Which of the following terms best describes the pair of compounds shown: enantiomers, diastereomers, or the same compound? Stereochemistry is the study of the three-dimensional structure of molecules. The cand trans isomers are forms of stereoisomers, differing structurally only in the location of the stoms of the molecule in three-dimensional space. Such stereostomers can have different physical and chemical properties. Stereochemistry is of particular interest to biochemists because the reactivity and toxicity of molecules change with their stereochemistry Most body...
Which of the following words best describes certainty? Question 15 options: inferential significance precision confidence
Which statement best describes the material below? Energy View Available Hint(s) O It is a metal and will conduct electricity very well. O It is a nonmetal and will not conduct electricity at all. O It will have semicoratuctor properties. Submit Applications The moderate band gap in semimetals (semiconductors) can be exploited by a proc impurity, called the dopant, is introduced into the semiconductor. The dopant will ha semiconductor in its valence shell. For example, silicon doped with phosphorous is...