question. Which type of compound usually has higher melting points: ionic compounds or covalent compounds? What is the reason for this difference in melting points? (3 points) Link: http://misterguch.brinkster.net/covalentcompounds.html Answer: Ionic compounds have a higher melting point the heat needed to break down the bonds between the compounds is much higher than not needing to break down any bonds at all. Do ionic compounds conduct electricity as: (3 points) Link: http://antoine
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Describe the difference between a mixture and a compound. A compound is a substance in which atoms of different elements are chemically held to one another. A mixture is a substance made by combining two or more different materials in such a way that no chemical reaction occurs. A mixture can usually be separated back into its original components‚ a compound cannot. Below are some examples of the differences between each. Compounds •Compounds are pure substances. •They are made up of two or more
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Properties of Different Bonds An ionic compound forms from a nonmetal and metal element. A covalent compound is formed by two non metal elements. A metallic compound is formed by two metal elements. Metallic compounds have generally high melting points‚ are loose and flexible with their electrons‚ conduct electricity well‚ and have low solubility in water. Ionic compounds are generally crystals‚ have a high melting point‚ and usually have high solubility in water and conduct electricity well when
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know this! * Be able to name the five types of bonds (covalent (2 types)‚ ionic and weak chemical bonds (2 types)). What needs to happen for each of these bonds to be created? For example‚ for a covalent bond electrons must be shared equally between two elements and these elements will share unpaired valence electrons. Polar covalent unequal sharing of electrons‚ nonpolar covalent equal sharing of electrons‚ ionic transfer of electrons‚ H-bond between H and O/N/F inter- or intra-molecularly because
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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 have the largest lattice
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the valence electrons. There are three types of bonds that I have learned about in the bonding comparison lab. These bonds include ionic‚ polar covalent‚ and non-polar covalent. Each of these bonds and the element compounds connected to them has individual solubility‚ conductivity‚ melting point‚ and volatility levels. The three element compounds that will follow are sodium chloride‚ sucrose‚ and p-dichlorobenzene. Sodium chloride is an ionic bond. It is soluble in water‚ but is not soluble in heptane
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2. Which type of bonds are found between the hydrogen and oxygen atoms in the water molecule? (1) Covalent bonds 3. What is the name given to the attractive forces that exist between water molecules that are close to each other and causes them to stick together? (1) Hydrogen bonding 4. Use a diagram with 5 water molecules to illustrate hydrogen bonding between water molecules (start with one molecule in the middle). How many water molecules can hydrogen bond with a single water molecule
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each other. Atoms interact by transferring‚ sharing or rearranging their electrons in a way that allows them to achieve a full shell of electrons which makes the atom stable. In compounds‚ there are two main types of bonding; ionic bonding and covalent bonding. Ionic bonding is usually found in compounds of a metal and a non-metal. This type of bonding involves the complete transfer of at least one electron from one atom to another. It is normally the metal atom which donates the electron
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1. What is an ionic bond? Typically an ionic bond occurs between one metal and one non-metal ion. One atom borrows one or more electrons from another atom. An ionic bond is a type of chemical bond that occurs when one atom loses an electron to form a positive ion and the other atom gains an electron to form a negative ion‚ which then result in attraction. 2. What is a covalent bond? A covalent bond is a bond that occurs when atoms in a molecule share a pair of electrons. For example‚ “the
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made up of‚ similar cells that performs a specific function tissue Cell-fundamental unit of life Organell- membrane enclosed structure that performs a specific function Molecule- cluster of small chemical units atoms held together by molecular bond Deoxyribonucleic acid CH. 2 Matter- anything that occupies space and has mass Element- a substance that cant be broken down to other substances by ordinary chemical means. 92 elements Compound-two or more different elements combined in
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