Chemical Bonds & Reactions Common Assessment

Front

What is the Law of Conservation of Mass?

Back

The Law of Conservation of Mass states that mass is neither created nor destroyed in a chemical reaction. The total mass of the reactants equals the total mass of the products.

Front

What is a chemical bond?

Back

A chemical bond is a lasting attraction between atoms, ions, or molecules that enables the formation of chemical compounds.

Front

What is an ionic bond?

Back

An ionic bond is a type of chemical bond formed through the electrostatic attraction between oppositely charged ions, typically between a metal and a non-metal.

Front

What is a covalent bond?

Back

A covalent bond is a type of chemical bond formed when two atoms share one or more pairs of electrons, typically between non-metal atoms.

Front

How can you determine if a compound is ionic or covalent?

Back

You can determine if a compound is ionic or covalent by testing its conductivity in solution. Ionic compounds conduct electricity when dissolved in water, while covalent compounds do not.

Front

What is the formula for a stable binary ionic compound formed between aluminum and oxygen?

Back

Front

What is the significance of measuring mass in a closed system during a chemical reaction?

Back

Measuring mass in a closed system ensures that all reactants and products are accounted for, demonstrating that mass is conserved during the reaction.

Front

What is the difference between a reactant and a product in a chemical reaction?

Back

Reactants are the starting substances that undergo a chemical change, while products are the substances formed as a result of the reaction.

Front

What is a chemical reaction?

Back

A chemical reaction is a process that leads to the transformation of one set of chemical substances to another, involving the breaking and forming of bonds.

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 are formed in products. This energy change can affect the rate and spontaneity of the reaction.