DOK Level Questions - Day 1

An atom is:

• a large molecule

• a small particle that makes up matter

• a type of chemical reaction

• a form of energy

List three examples of elements.

• Hydrogen, Oxygen, Carbon

• Water, Salt, Sugar

• Earth, Wind, Fire

• Dog, Cat, Bird

A molecule is defined as:

• a group of atoms bonded together.

• a single atom.

• a type of chemical reaction.

• a phase of matter.

Identify the difference between a compound and a mixture.

• A compound is a pure substance, while a mixture contains two or more substances.

• A compound can be separated by physical means, while a mixture cannot.

• A compound has variable composition, while a mixture has a fixed composition.

• A compound is always a liquid, while a mixture is always a solid.

The two main types of mixtures are:

• Homogeneous and Heterogeneous

• Solid and Liquid

• Organic and Inorganic

• Acidic and Basic

Compare and contrast elements and compounds.

• Elements are pure substances consisting of one type of atom, while compounds are substances formed from two or more elements chemically bonded together.

• Elements are substances formed from two or more elements chemically bonded together, while compounds are pure substances consisting of one type of atom.

• Elements and compounds are both pure substances consisting of one type of atom.

• Elements and compounds are both substances formed from two or more elements chemically bonded together.

Summarize the process of how atoms combine to form molecules.

• Atoms share or transfer electrons to form chemical bonds.

• Atoms split into smaller particles to form molecules.

• Atoms lose their identity to form new elements.

• Atoms remain isolated and do not interact.

Estimate how many atoms are in a water molecule.

• 1

• 2

• 3

• 4

Investigate the properties of a solution and explain how it differs from a mixture.

• A solution is a homogeneous mixture, while a mixture can be homogeneous or heterogeneous.

• A solution is always a liquid, while a mixture can be in any state.

• A solution contains only one substance, while a mixture contains multiple substances.

• A solution is a type of mixture that is always heterogeneous.

Draw conclusions about the importance of atoms in forming different substances.

• Atoms are the basic building blocks of all substances.

• Atoms are not involved in the formation of substances.

• Atoms play a minor role in forming substances.

• Atoms are only important in forming living substances.