Final review

Front

What are covalent bonds made of?

Back

Covalent bonds are made up of multiple non-metals.

Front

Which element shares common properties with sodium (Na)?

Back

Magnesium (Mg) shares common properties with sodium.

Front

What is the state reached when heat is no longer flowing between objects?

Back

Thermal equilibrium.

Front

What type of system is characterized by mass remaining constant during a reaction?

Back

Open system.

Front

What is a characteristic of Group 14 elements?

Back

They have 4 valence electrons.

Front

Define covalent bond.

Back

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

Front

What is thermal equilibrium?

Back

Thermal equilibrium is the state in which two objects in thermal contact no longer exchange heat.

Front

What distinguishes an open system from a closed system?

Back

An open system can exchange both matter and energy with its surroundings, while a closed system can exchange only energy.

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding.

Front

What is the significance of the periodic table in chemistry?

Back

The periodic table organizes elements based on their atomic number and properties, helping predict chemical behavior.