Chemical Bonds

Aiden, Charlotte, and Aria are discussing the main reason why atoms form chemical bonds in a chemistry class. What is the main reason they conclude?

• To reduce overall energy

• To increase overall energy

• To attract more electrons

• To repel other atoms

You are a chemist working in a lab. You come across a bond where electrons are attracted to one atom more than the other. What term would you use to describe this bond?

• Non-polar covalent bond

• Polar covalent bond

• Ionic bond

• Metallic bond

You are a chemist working in a lab. You are experimenting with a metal and a non-metal. You notice that electrons are being transferred from the metal to the non-metal. What type of bond is being formed in this process?

• Non-polar covalent bond

• Polar covalent bond

• Ionic bond

• Metallic bond

Imagine you are a scientist studying molecular structures. What would you call the shortest distance between the centers of two atoms when the atoms are bonded together?

• Bond length

• Electronegativity

• Polarity

• Ionic radius

In a chemical reaction involving two non-metal or metalloid atoms, which type of bond is formed when they share two electrons equally or nearly equally?

• Non-polar covalent bond

• Polar covalent bond

• Ionic bond

• Metallic bond

In a water molecule, what term is used to describe the uneven distribution of charges between the oxygen and hydrogen atoms?

• Bond length

• Electronegativity

• Polarity

• Ionic radius

In a salt crystal, such as table salt (sodium chloride), what type of bond is responsible for the strong attraction between the positively charged sodium ions and the negatively charged chloride ions?

• Non-polar covalent bond

• Polar covalent bond

• Ionic bond

• Metallic bond

In a chemical reaction between two non-metallic or metalloid elements, what type of bond is formed when the electrons are shared unevenly between the atoms?

• Non-polar covalent bond

• Polar covalent bond

• Ionic bond

• Metallic bond

In a salt like sodium chloride (table salt), what type of bond is formed between the positively charged sodium ions and the negatively charged chloride ions?

• Non-polar covalent bond

• Polar covalent bond

• Ionic bond

• Metallic bond