Physical Science Midterm

Front

What is the chemical formula for water?

Back

H₂O, which means each water molecule contains two hydrogen atoms and one oxygen atom.

Front

What do compounds with covalent bonds do?

Back

They share electrons to form bonds.

Front

What state of matter is methane at 45°C?

Back

Gas.

Front

What is formed when copper and sulfur are heated together?

Back

A compound that was created from copper and sulfur bonding.

Front

What is an example of a chemical reaction?

Back

Two solutions mixed in a beaker produce a solid.

Front

What is a compound?

Back

A substance formed when two or more elements chemically bond together.

Front

What is the difference between a mixture and a compound?

Back

A mixture is a physical combination of substances, while a compound is a chemical combination.

Front

What is the definition of a chemical reaction?

Back

A process that leads to the transformation of one set of chemical substances to another.

Front

What is the significance of the subscript in a chemical formula?

Back

It indicates the number of atoms of each element in a molecule.

Front

What is the role of electrons in covalent bonding?

Back

Electrons are shared between atoms to form a bond.