Stickler Week 17

A physical change is a change that affects one or more physical properties of a substance without changing its chemical composition. Examples include melting ice or breaking a glass.

A chemical change is a change that results in the formation of new chemical substances. Examples include rusting iron or burning wood.

You can separate iron filings from flour using magnetic attraction, as iron is magnetic and will be attracted to a magnet.

An inclined plane is a flat surface that is tilted at an angle to help lift objects. It reduces the amount of force needed to lift an object.

The inclined plane that is the steepest requires the most force to push the ball to the top.

Force is a push or pull on an object that can cause it to move, stop, or change direction.

Gravity pulls objects downwards, making it harder to push them up an inclined plane.

Filtration is a process used to separate solids from liquids or gases using a filter that allows only the liquid or gas to pass through.

Distillation is a process used to separate mixtures based on differences in boiling points, often used to purify liquids.

Evaporation is the process by which liquid turns into vapor, often used to separate a liquid from a dissolved solid.