Saturday Academy Chemistry Review

Front

What type of bond is formed when electrons are shared between atoms?

Back

Covalent bond.

Front

What type of bond is formed when electrons are transferred from one atom to another?

Back

Ionic bond.

Front

What is the charge of a neutron?

Back

Neutrons have no charge (neutral).

Front

What happens to the physical properties of substances when they are mixed in water?

Back

They maintain their physical properties.

Front

How many valence electrons does an atom of Bromine (Br) have?

Back

7 valence electrons.

Front

What is the definition of an ionic compound?

Back

An ionic compound is formed when atoms transfer electrons, resulting in positive and negative ions that attract each other.

Front

What is the definition of a covalent compound?

Back

A covalent compound is formed when two or more atoms share electrons.

Front

What is the significance of valence electrons in chemical bonding?

Back

Valence electrons determine how an atom can bond with other atoms.

Front

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

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.

Front

What is the periodic table?

Back

The periodic table is a tabular arrangement of elements organized by increasing atomic number, showing periodic trends.