1.When does covalent bonding take place?
A. It takes place when atoms share electrons with one another.
B. It takes place when the attraction between atoms is strong.
C. It takes place when atoms collide with one another.
D. It takes place when atoms attain stability.
2. What kind of chemical bond will form between two oxygen atoms?
A. Ionic bond
B. Metallic bond
C. Polar covalent bond
D. Nonpolar covalent bond
3. Which of the following will have the highest melting temperature?
A. Sodium chloride (salt)
B. Paraffin wax (candle wax)
C. Sucrose (table sugar)
D. Lead wire
5. Which of the following statements best describe organic compounds?
A. Organic compounds are compounds that contain carbon and oxygen only
B. Organic compounds are compounds that are produced by living things
C. Organic compounds are composed mainly of carbon and hydrogen
D. Organic compounds are compounds that contain carbon atoms only
5. How do carbon atoms form many organic compounds?
A. By attracting other elements toward themselves to form the bonds
B. By forming many bonds with other carbon atoms and other elements
C. By sharing their electrons with other metal and non-metal elements
D. By transferring their electrons to the atoms of surrounding elements
A. It takes place when atoms share electrons with one another.
B. It takes place when the attraction between atoms is strong.
C. It takes place when atoms collide with one another.
D. It takes place when atoms attain stability.
2. What kind of chemical bond will form between two oxygen atoms?
A. Ionic bond
B. Metallic bond
C. Polar covalent bond
D. Nonpolar covalent bond
3. Which of the following will have the highest melting temperature?
A. Sodium chloride (salt)
B. Paraffin wax (candle wax)
C. Sucrose (table sugar)
D. Lead wire
5. Which of the following statements best describe organic compounds?
A. Organic compounds are compounds that contain carbon and oxygen only
B. Organic compounds are compounds that are produced by living things
C. Organic compounds are composed mainly of carbon and hydrogen
D. Organic compounds are compounds that contain carbon atoms only
5. How do carbon atoms form many organic compounds?
A. By attracting other elements toward themselves to form the bonds
B. By forming many bonds with other carbon atoms and other elements
C. By sharing their electrons with other metal and non-metal elements
D. By transferring their electrons to the atoms of surrounding elements
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Answers & Comments
1. A
-Covalent bonding occurs when pairs of electrons are shared by atoms. Atoms will covalently bond with other atoms in order to gain more stability, which is gained by forming a full electron shell. By sharing their outer most (valence) electrons, atoms can fill up their outer electron shell and gain stability.
2. D
-nonpolar covalent bond-
-The chemical bond that will be form between two oxygen atoms is a nonpolar covalent bond. There are two types of covalent bond: the polar covalent bond and the non polar covalent bond. If the electronegativity difference is equal to 0.4 or less, it results to a non polar covalent bond.
3. A
-sodium chloride-
-Of all the substances present, (a) sodium chloride or salt has the highest melting temperature. Among the present substances, salt has a melting point of about 801 degrees Celsius.
4. C
-Organic compounds are composed mainly of carbon and hydrogen. Organic compounds is one of the types of chemical compounds, mainly identified for having carbon and hydrogen bonds.
5. B
-Technically, carbon forms organic compounds because it has the ability to form bonds with other elements. Thus, the answer is (b.) By forming many bonds with other carbon atoms and other elements. ... By sharing their electrons with other metal and non-metal elements.
Explanation:
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