ICP-C Unit 4 Test Review

Front

What type of bond does NaCl have?

Back

Ionic bond: A bond formed by the transfer of electrons from one atom to another, resulting in the attraction between positively and negatively charged ions.

Front

What holds a compound with a covalent bond together?

Back

The mutual attraction of nuclei to shared electrons: In covalent bonds, atoms share pairs of electrons, creating a strong attraction between the positively charged nuclei and the shared electrons.

Front

What do electrons do in an ionic bond versus a covalent bond?

Back

Ionic bond: Electrons are transferred/donated from one atom to another. Covalent bond: Electrons are shared between atoms.

Front

What do you call the compounds that are present after a chemical reaction?

Back

Products: The substances that are formed as a result of a chemical reaction.

Front

How much does one mole of C2H6 weigh?

Back

30 g: The molar mass of C2H6 (ethane) is calculated as 2(12.01 g/mol for C) + 6(1.008 g/mol for H) = 30.07 g/mol.

Front

What is a covalent bond?

Back

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

Front

What is an ionic bond?

Back

An ionic bond is a type of chemical bond that occurs when electrons are transferred from one atom to another, resulting in the formation of ions.

Front

What are reactants in a chemical reaction?

Back

Reactants: The starting substances in a chemical reaction that undergo change to form products.

Front

What is the significance of the mole in chemistry?

Back

The mole is a unit that measures the amount of substance. One mole contains approximately 6.022 x 10^23 particles (atoms, molecules, etc.).

Front

What is the difference between a chemical change and a physical change?

Back

A chemical change results in the formation of new substances, while a physical change alters the form or appearance of a substance without changing its chemical composition.