Interpretation: The effect of chemistry on all aspects of life and most natural events is to be explained.
Concept Introduction : Chemistry is the branch of science that examines the characteristics, make-up, and structure of substances, as well as the changes they go through, and the energy released or absorbed.
Answer to Problem 1LC
Chemistry and chemicals are used in everything one can see, feel, smell, taste, and touch.
Explanation of Solution
All objects that can be classified as materials are collectively referred to as matter. Anything with mass and space is matter. Everything around us is formed of matter, including trees, buildings, food, etc. Chemistry is the investigation of the chemical makeup of matter and the changes that it goes through.
Consider a process of photosynthesis that occurs naturally in plants. In the process of photosynthesis,
So, chemistry studies the chemical changes occurring in photosynthesis. Thus, the study of chemistry covers both the atomic structure and structural organization of compounds as well as the various interactions between substances that might result in reactions.
Chapter 1 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
- Consider the following Figure 2 and two atoms that are initially an infinite distance apart, x =00, at which point the potential energy of the system is U = 0. If they are brought together to x = x, the potential energy is related to the total force P by dU dx = P Given this, qualitatively sketch the variation of U with x. What happens at x=x? What is the significance of x = x, in terms of the potential energy? 0 P, Force 19 Attraction Total Repulsion x, Distance Figure 2. Variation with distance of the attractive, repulsive, and total forces between atoms. The slope dP/dx at the equilibrium spacing xe is proportional to the elastic modulus E; the stress σb, corresponding to the peak in total force, is the theoretical cohesive strength.arrow_forwardDenote the dipole for the indicated bonds in the following molecules. H3C ✓ CH3 B F-CCl 3 Br-Cl H3C Si(CH3)3 wwwwwww OH НО. HO HO OH vitamin C CH3arrow_forwardFor the SN2 reaction, draw the major organic product and select the correct (R) or (S) designation around the stereocenter carbon in the organic substrate and organic product. Include wedge-and-dash bonds and draw hydrogen on a stereocenter. Η 1 D EN Select Draw Templates More C H D N Erasearrow_forward
- Q9: Explain why compound I is protonated on O while compound II is protonated on N. NH2 NH2 I IIarrow_forwardAN IR spectrum, a 13 CMR spectrum, and a 1 HMR spectrum were obtained for an unknown structure with a molecular formula of C9H10. Draw the structure of this compound.arrow_forwardAN IR spectrum, a 13 CMR spectrum, and a 1 HMR spectrum were obtained for an unknown structure with a molecular formula of C9H10. Draw the structure of this compound.arrow_forward
- (a) What is the hybridization of the carbon in the methyl cation (CH3*) and in the methyl anion (CH3¯)? (b) What is the approximate H-C-H bond angle in the methyl cation and in the methyl anion?arrow_forwardQ8: Draw the resonance structures for the following molecule. Show the curved arrows (how you derive each resonance structure). Circle the major resonance contributor.arrow_forwardQ4: Draw the Lewis structures for the cyanate ion (OCN) and the fulminate ion (CNO). Draw all possible resonance structures for each. Determine which form for each is the major resonance contributor.arrow_forward
- In the following molecule, indicate the hybridization and shape of the indicated atoms. CH3 N CH3 HÖ: H3C CI: ::arrow_forwardQ3: Draw the Lewis structures for nitromethane (CH3NO2) and methyl nitrite (CH3ONO). Draw at least two resonance forms for each. Determine which form for each is the major resonance contributor.arrow_forwardQ1: Draw a valid Lewis structures for the following molecules. Include appropriate charges and lone pair electrons. If there is more than one Lewis structure available, draw the best structure. NH3 Sulfate Boron tetrahydride. C3H8 (linear isomer) OCN NO3 CH3CN SO2Cl2 CH3OH2*arrow_forward
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