Mixtures, Solutions, and Separation Methods

Observe, test, and classify everyday objects and natural materials by their physical properties.

Explore physical behaviors, pressure, surface tension, and states of air and water.

Demonstrate reversible physical changes and irreversible chemical transformations caused by temperature changes.

Explore how substances mix, dissolve, and separate using physical properties.

Understand that complex objects are systems of interacting parts that can be taken apart and rebuilt.

Investigate forces, friction, gravity, and air resistance and their effects on motion and shape.

Investigate magnetic attraction, repulsion, non-contact forces, and navigational compasses.

Investigate how vibrating objects create sound, how sound travels through media, and what determines pitch and volume.

Investigate straight-line light travel, shadows, reflection from mirrors, refraction in prisms, and transparency.

Build simple circuits, test conductors and insulators, explore static electricity, and apply electrical safety rules.