Final Exam Chemistry Honors 20-21

Front

How do sodium (Na) and fluorine (F) bond together?

Back

Sodium (Na) donates one electron to fluorine (F), resulting in the formation of NaF, an ionic compound.

Front

What is the half-life of a radioactive substance?

Back

The half-life is the time required for half of the radioactive atoms in a sample to decay.

Front

What happens to the reaction rate when the surface area of a reactant increases?

Back

Increasing the surface area of a reactant increases the reaction rate due to more particles being available for collisions.

Front

What is the chemical equation for the decomposition of silver chloride (AgCl)?

Back

2AgCl(s) + energy → 2Ag(s) + Cl2(g)

Front

What does it mean if a reaction is endothermic?

Back

An endothermic reaction absorbs energy from its surroundings, usually in the form of heat.

Front

What are the units for molar mass?

Back

grams/mole

Front

How does powdered calcium carbonate (CaCO3) affect the reaction rate with hydrochloric acid (HCl)?

Back

Powdered CaCO3 has a greater surface area, which increases the reaction rate compared to a solid block.

Front

What is the significance of a chemical bond in a compound?

Back

Chemical bonds hold atoms together in a compound, determining its properties and stability.

Front

What is the role of energy in chemical reactions?

Back

Energy is required to break bonds in reactants and is released when new bonds form in products.

Front

What is the difference between an ionic bond and a covalent bond?

Back

An ionic bond involves the transfer of electrons between atoms, while a covalent bond involves the sharing of electrons.