Bond Type Review (pages 10-11)

1) Given the equation: H+H→H₂ Which statement describes the energy change in this reaction?

• A bond is broken as energy is absorbed

• A bond is broken as energy is released

• A bond is formed as energy is absorbed

• A bond is formed as energy is released

Tags

NGSS.HS-PS1-4

2) What is the correct bond type found in this model?

• Ionic

• Polar covalent

• Nonpolar covalent

• Metallic

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

3) Which symbol represents an atom in the ground state with the most stable valence electron configuration?

• B

• O

• Li

• Ne

Tags

NGSS.HS-PS1-1

4) Which element has an atom with the greatest attraction for electrons in a chemical bond?

• As

• Bi

• N

• P

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

5) What occurs when potassium reacts with chlorine to form potassium chloride?

K + Cl → KCl

• Electrons are shared and the bonding is ionic

• Electrons are shared and the bonding is covalent

• Electrons are transferred and the bonding is ionic

• Electrons are transferred and the bonding is covalent

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

6) Which formula represents an ionic compound?

• H₂

• CH₄

• CO₂

• CaCl₂

7) Which pair of atoms has the most polar bond?

• H-Br

• H-Cl

• I-Br

• I-Cl

Tags

NGSS.HS-PS1-2

8) What type of bond exists in a molecule of iodine (I₂)?

• Ionic

• Polar covalent

• Nonpolar covalent

• Metallic

9) A sample of a substance has these characteristics: melting point of 984K, hard, brittle solid at room temperature, poor conductor of heat and electricity as a solid, good conductor of electricity as a liquid or in an aqueous solution

The sample can be classified as . . . .

• a metallic element

• a radioactive element

• a molecular (covalent) compound

• an ionic compound

Tags

NGSS.HS-PS1-3

10) What type of bond exists in a molecule of hydrogen iodide (HI)?

• a polar covalent bond with ΔEN = 0

• a polar covalent bond with ΔEN 0-1.6

• a nonpolar covalent bond with ΔEN = 0

• a nonpolar covalent bond with ΔEN 0-1.6