Chapter 6: Chemical Bonds Section 6.1: Ionic Bonding Chemical bond: the force that holds atoms of elements and ions together to become a stable‚ new substance called a compound. -the number of valence electrons determines if an atom will form a chemical bond. -metals tend to give up electrons to other atoms. -nonmetals tend to take electrons from other atoms. -noble gases will not form a chemical bond because these atoms already have a full outer shell of energy. Ionization: the
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IGCSE Complete Chemistry Notes Unit 1: States of matter Everything is made of particles. Particles in solid are not free to move around. Liquids and gases can. As particles move they collide with each other and bounce off in all directions. This is called random motion. In 2 substances‚ when mixed‚ particles bounce off in all directions when they collide. This mixing process is called diffusion. It’s also the movement of particles without a force. The smallest particle
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|H2O |Covalent |Simple molecular | |SiCl4 |covalent |simple molecular | |RbCl |ionic |giant lattice/ionic | |Si |covalent |giant molecular | |SiO2 |covalent |giant molecular
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Waal’s or dipole-dipole‚ but weaker than covalent bonding. The effect of hydrogen bonding on intermolecular forces can be demonstrated very well by studying the boiling points of the group 6 hydrides b.p. comparison of main group hydrides Order of priority Hydrogen bonding strongest Dipole -dipole interactions Van der Waals forces Hydrogen bonds result from hydrogen bonded as described above. This results in molecules with hydrogen bonding exhibiting stronger intermolecular forces‚
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likely to form three covalent bonds? A) C B) Si C) P D) S E) Se 2. A chemical bond formed when two atoms share two pairs of electrons is a ________ bond; it is best described as ________. A) double; covalent B) double; ionic C) single; covalent D) single; ionic E) triple; covalent 3. Which property could describe a covalent compound? A) It conducts electricity when melted. B) Has a low boiling point C) It is composed of a non-metal and a metal. D) It conducts electricity when dissolved
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* Question 1 10 out of 10 points | | | According to VSEPR theory‚ which one of the following molecules should have a bent shape?Answer | | | | | Selected Answer: | Cl2O | | | | | * Question 2 10 out of 10 points | | | According to the VSEPR theory‚ the molecular shape of SiCl4 isAnswer | | | | | Selected Answer: | tetrahedral. | | | | | * Question 3 10 out of 10 points | | | According to the VSEPR theory‚ the shape of the SO3 molecule
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term. Ions have this chemical bond known as ionic bonds (Encarta‚ 2005). Ionic bonds are formed through the attraction between two oppositely charged ions. Akin to ionic bonds‚ young Baptists should readily be attracted to lost souls and vice versa. Winning souls should be each young person’s first love. Young Baptists need to serve as the light. Light is needed in a darkening place and it’s getting dimmer and dimmer every day in this world. Also‚ ionic bonds occur in millions. They work together
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a much more polar molecule than 2-propanol. How does the polarity of the liquid seem to influence the solubility of these solids? Water is more of a polar molecule then the given 2-propanol which allows ionic soild‚ sodium chloride that breaks off and becomes soluble. Camphor is not an ionic solid which means that it is not soluble in water although of the given molecular polarity. 9. What does a strong odour indicate about the ease with which the particles in a solid leave its surface? A
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likely to be ionic? A. KF B. CCl4 C. CS2 D. CO2 E. ICl 2. Which of these compounds is most likely to be ionic? A. NCl3 B. BaCl2 C. CO D. SO2 E. SF4 3. Which of these compounds is most likely to be covalent? A. Rb2S B. SrCl2 C. CS2 D. CaO E. MgI2 4. Which of these compounds is most likely to be covalent? A. CsOH B. NF3 C. Sr(NO3)2 D. CaO E. LiF 5. The Lewis dot symbol for the chloride ion is A. B. C. D. E. 6. Which of these ionic solids would
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2-A‚ 7th –A of periodic table? Q.4-Define Electro negativity/Electron Affinity/Ionization potential/Atomic radii CHAP NO.5 Q.1-Define ionic bond and explain about the formation of NaCl? Q.2-Define Covalent bonds and its types/Coordinate Covalent bond with example? Q.3-define Hydrogen bonding / London Forces/dipole –dipole forces Q.4-differentiate b/w ionic & covalent bond OR covalent & Coordinate covalent bond? CHAP NO.6 All Definitions CHAP NO.7 ALL definitions/Difference b/w solution and
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