A mixture is composed of two or more substances that are physically combined but not chemically bonded. This allows the substances to be separated easily through physical means.

Fundamentals Of Chemistry: Key Terms Quiz

1. Define Element.

A substance that cannot be made chemically simpler.All of its atoms are of the same type.

A substance that changes its chemical composition when exposed to heat.

A substance made up of multiple types of atoms.

A substance that can be broken down into simpler components.

An element is a pure substance made of only one type of atom, and it cannot be chemically broken down into simpler components.

Explanation

An element is a pure substance made of only one type of atom, and it cannot be chemically broken down into simpler components.

2. Define Molecule.

A particle containing 2 or more atoms

A type of cell found in living organisms.

A form of energy produced by chemical reactions.

A particle containing only one atom.

A molecule is a group of two or more atoms held together by chemical bonds. It is the smallest unit of a chemical compound that retains the chemical properties of that compound.

Explanation

A molecule is a group of two or more atoms held together by chemical bonds. It is the smallest unit of a chemical compound that retains the chemical properties of that compound.

3. Define Compound.

A substance made up of only one chemical element.

A substance containing 2 or more different chemical elements

A substance that exists in its pure form.

A substance that cannot be broken down into simpler substances.

A compound is formed when two or more different elements chemically combine to form a new substance with its own unique properties. It is different from a pure element, which consists of only one type of atom.

Explanation

A compound is formed when two or more different elements chemically combine to form a new substance with its own unique properties. It is different from a pure element, which consists of only one type of atom.

4. Define Atom.

A single individual particle

A group of particles

A form of energy

A type of molecule

An atom is the basic unit of matter that consists of a nucleus containing protons and neutrons, surrounded by electrons.

Explanation

An atom is the basic unit of matter that consists of a nucleus containing protons and neutrons, surrounded by electrons.

5. Define Mixture.

Multiple substances that are chemically bonded together.

Only one substance that is a combination of multiple elements or compounds.

A single substance made up of only one element or compound.

2 or more substances (elements or compounds) that are NOT chemically bonded.

The correct definition of a mixture is when two or more substances are combined physically but retain their individual properties. This allows the substances to be separated through physical means, unlike in a compound where the elements are chemically bonded.

Explanation

The correct definition of a mixture is when two or more substances are combined physically but retain their individual properties. This allows the substances to be separated through physical means, unlike in a compound where the elements are chemically bonded.

Fundamentals of Chemistry: Key Terms Quiz