Question

1. drag and drop the words with the descriptions.

the energy needed to break a chemical bond
the average distance from the nucleus of one atom to the center of an atom bonded to it
when two particles with the same charge come close together
two or more atoms that share electrons when bonding

1. choose the best answer.

covalent bonds occur between which two types of elements?
nonmetal and nonmetal
metal and metal
metal and nonmetal

Explanation:

• For the first part:
• "The energy needed to break a chemical bond" is the definition of bond energy.
• "The average distance from the nucleus of one atom to the center of an atom bonded to it" is the definition of bond length.
• "When two particles with the same charge come close together" is electrostatic repulsion.
• "Two or more atoms that share electrons when bonding" is a covalent compound.
• For the second part:
• Covalent bonds occur when atoms share electrons. Non - metals have similar electronegativities, so they share electrons to achieve a stable electron configuration. Metals tend to lose electrons (form ionic bonds with non - metals) or form metallic bonds among themselves.

Answer:

1.

• the energy needed to break a chemical bond: bond energy
• the average distance from the nucleus of one atom to the center of an atom bonded to it: bond length
• when two particles with the same charge come close together: electrostatic repulsion
• two or more atoms that share electrons when bonding: covalent compound

1. nonmetal and nonmetal