Student can classify matter by state and composition.
Define solid, liquid, and gas based on particle arrangement.
Everything around you that has mass and occupies space is called matter. In our daily lives, we interact with matter in three primary physical states: solid, liquid, and gas. The state of a substance depends on how closely its constituent particles are held together and how much freedom they have to move.
Distinguish pure substances and mixtures.
When we look at matter at a bulk (macroscopic) level, we can classify it into two broad categories based on its composition: Mixtures and Pure Substances.
Matrix comparing properties of elements, compounds, and mixtures.
One type of atom
Fixed ratio
Variable ratio
Identify whether a given sample is a mixture or pure substance.
A scientist is working with a cylinder of pure oxygen gas (O₂). Every molecule in the cylinder consists of exactly two identical oxygen atoms bonded together. How should this substance be classified?