Question

match the word with its meaning. write the letter in the space provided. do not draw lines.

1. ion

a) mixtures composed of 2 or more elements, at least one is a metal

1. anion

b) a bond that results from the sharing of electrons

1. cation

c) an atom or group of atoms that have a + or - charge

1. octet

d) the electrostatic attraction that bonds opposite charged ions together

1. oxidation number

e) positively charged ions

1. ionic bond

f) a bond that results from the attraction between metal cations and a sea of electrons

1. metallic bond

g) the bonding of atoms to achieve the electron a full electron shell

1. polar

h) negatively charged ions

1. polar - covalent

i) the charge of an atom

1. alloy

j) a molecule in which one side is slightly positive and the other side slightly negative

1. covalent bond

k) a bond between atoms in which electrons are shared unequally
fill in the blank

1. electrons found in the outermost energy level are called the ________ electrons.
2. a pair of electrons that are not shared between atoms are called ________

Explanation:

• Ion: An atom or group of atoms with a charge (positive or negative). This matches option C.
• Anion: Negatively - charged ions. So, it matches option H.
• Cation: Positively - charged ions. Matches option E.
• Octet: Atoms bond to achieve a full electron shell (usually 8 electrons in the valence shell). Matches option G.
• Oxidation number: Represents the charge of an atom in a compound. Matches option I.
• Ionic bond: Electrostatic attraction between oppositely - charged ions. Matches option D.
• Metallic bond: Bonding from the attraction between metal cations and a sea of electrons. Matches option F.
• Polar: Molecule with a slightly positive and a slightly negative side. Matches option J.
• Polar - covalent: Bond where electrons are shared unequally. Matches option K.
• Alloy: Mixture of 2 or more elements, at least one is a metal. Matches option A.
• Covalent bond: Bond from electron - sharing. Matches option B.

For the fill - in - the - blank:

• 12: Electrons in the outermost energy level are called valence electrons.
• 13: A pair of unshared electrons is called a lone pair.

Answer:

1. C
2. H
3. E
4. G
5. I
6. D
7. F
8. J
9. K
10. A
11. B
12. valence
13. lone pair