Covalent Bonds and Types of Reactions (Q2W4)

What is the definition of a covalent bond?

• A covalent bond is a chemical bond that involves the repulsion of like charges between atoms.

• A covalent bond is a chemical bond that involves the attraction of opposite charges between atoms.

• A covalent bond is a chemical bond that involves the transfer of electron pairs between atoms.

• A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms.

Tags

NGSS.HS-PS1-1

What is the difference between a polar and nonpolar covalent bond?

• The difference lies in the formation of ionic bonds.

• The difference lies in the equal sharing of electrons.

• The difference lies in the unequal sharing of electrons.

• The difference lies in the transfer of electrons.

Tags

NGSS.HS-PS1-1

Give an example of a polar covalent bond.

• NaCl

• H₂O

• O₂

• CO₂

What are the four main types of chemical reactions?

• oxidation, reduction, combustion, and neutralization

• ionization, dissociation, precipitation, and neutralization

• evaporation, condensation, sublimation, and deposition

• synthesis, decomposition, single displacement, and double displacement

What is a synthesis reaction?

• A synthesis reaction is a type of chemical reaction in which two or more complex substances combine to form a simpler substance.

• A synthesis reaction is a type of chemical reaction in which two or more substances combine to form a substance with the same properties as the original substances.

• A synthesis reaction is a type of chemical reaction in which two or more simple substances combine to form a more complex substance.

• A synthesis reaction is a type of chemical reaction in which two or more substances break down into simpler substances.

Tags

NGSS.MS-PS1-5

What is a decomposition reaction?

• A decomposition reaction is a type of chemical reaction where a compound releases energy in the form of heat and light.

• A decomposition reaction is a type of chemical reaction where a compound breaks down into simpler substances or elements.

• A decomposition reaction is a type of chemical reaction where a compound combines with other substances to form a more complex compound.

• A decomposition reaction is a type of chemical reaction where a compound undergoes a phase change from solid to liquid.

What is a double replacement reaction?

• A double replacement reaction is a chemical reaction where two compounds exchange atoms to form two new compounds.

• A double replacement reaction is a chemical reaction where two compounds break down into multiple compounds.

• A double replacement reaction is a chemical reaction where two compounds combine to form a single compound.

• A double replacement reaction is a chemical reaction where two compounds exchange ions to form two new compounds.

What is the VSEPR theory used to predict?

• Bond Strength
• Polarity
• Molecular Shape
• Electronegativity

Which molecule would have this molecular geometry?

• BF₃
• CH₄
• PCl₅
• CO₂

Which of the following molecular shapes describes a molecule that has 1 lone pair and 4 atoms bonded to a central atom?

• Linear

• Trigonal Planar

• Sawhouse

• T-Shaped

• Square Planar