Chapter 8 Assessment:
8.1 Assessment-
1. A Chemical bond is the force that holds two atoms together.
2. Ions form because neutral atoms become charged by losing or gaining an electron this happens so that the ion of an element has a full outer shell.
3. The Noble Gasses are not reactive because, the outer shell is full and happy.
4. when a negative ion forms electrons are gained and energy is given off and when a positive ion forms electrons are lost and energy is used.
8.2 Assessment-
1. The electrostatic force that holds oppositely charged particles together in an ionic compound, or is referred to as an Ionic Bond.
2. Ionic bonds form when two or more atoms gain or lose electrons and from salts. For example, Sodium (Na) forms with Chlorine (Cl) to become chemically stable and form Sodium Chloride (NaCl table salt).
3. Melting Point, Boiling Point, and Hardness are the physical properties of and Ionic Bond.
4. They are arranged in an orderly, repeating, geometric pattern.
8.3 Assessment-
1. A monoatomic ion has only one atom examples are chloride, Cl, Fluoride, F, and Sodium Na. A poly atomic ion has more than one, Sulfate SO4, Nitrate, NO3, and Mercurous Hg2.
2. Subscripts indicate the number of the preceding element, in H2O there are two hydrogens (H) and one oxygen (O) or in C6H12O8 there are six carbon (C) twelve hydrogen (H) and eight oxygen (O).
3. They are named by there oxidation number.
4. An oxyanion is a polyatomic ion composed of an element, usually a nonmetal, bonded to one or more oxygen atoms. It's name is based on the number of oxygen atoms in the ion.
8.4 Assessment-
1. A metallic bond is the attraction of a metallic cation for delocalized electrons.
2. Metals bond in a specific way. When they bond, a lattice of positive nuclei is formed which a sea of floating electrons moving in between the nuclei. This creates a very strong bond between all of the nuclei and electrons of the alloy. Because of this strength, a lot of energy (heat) is needed to break the bond, therefore they have high melting points. Metallic bonds do not conduct heat very efficiently.
3. An alloy is an solution made of two or more metal or non-metal elements or usually combined together or dissolved into each other while melting.
4. In a Substitutional Alloy, atoms of the solute take positions normally occupied by a solvent atom. In a Interstitial Alloy, Solute atoms can occupy the gaps between the solvent atoms.
1. A Chemical bond is the force that holds two atoms together.
2. Ions form because neutral atoms become charged by losing or gaining an electron this happens so that the ion of an element has a full outer shell.
3. The Noble Gasses are not reactive because, the outer shell is full and happy.
4. when a negative ion forms electrons are gained and energy is given off and when a positive ion forms electrons are lost and energy is used.
8.2 Assessment-
1. The electrostatic force that holds oppositely charged particles together in an ionic compound, or is referred to as an Ionic Bond.
2. Ionic bonds form when two or more atoms gain or lose electrons and from salts. For example, Sodium (Na) forms with Chlorine (Cl) to become chemically stable and form Sodium Chloride (NaCl table salt).
3. Melting Point, Boiling Point, and Hardness are the physical properties of and Ionic Bond.
4. They are arranged in an orderly, repeating, geometric pattern.
8.3 Assessment-
1. A monoatomic ion has only one atom examples are chloride, Cl, Fluoride, F, and Sodium Na. A poly atomic ion has more than one, Sulfate SO4, Nitrate, NO3, and Mercurous Hg2.
2. Subscripts indicate the number of the preceding element, in H2O there are two hydrogens (H) and one oxygen (O) or in C6H12O8 there are six carbon (C) twelve hydrogen (H) and eight oxygen (O).
3. They are named by there oxidation number.
4. An oxyanion is a polyatomic ion composed of an element, usually a nonmetal, bonded to one or more oxygen atoms. It's name is based on the number of oxygen atoms in the ion.
8.4 Assessment-
1. A metallic bond is the attraction of a metallic cation for delocalized electrons.
2. Metals bond in a specific way. When they bond, a lattice of positive nuclei is formed which a sea of floating electrons moving in between the nuclei. This creates a very strong bond between all of the nuclei and electrons of the alloy. Because of this strength, a lot of energy (heat) is needed to break the bond, therefore they have high melting points. Metallic bonds do not conduct heat very efficiently.
3. An alloy is an solution made of two or more metal or non-metal elements or usually combined together or dissolved into each other while melting.
4. In a Substitutional Alloy, atoms of the solute take positions normally occupied by a solvent atom. In a Interstitial Alloy, Solute atoms can occupy the gaps between the solvent atoms.