MYP2 Science Study Guide: Mixtures and Separation Techniques

Flashcards for MYP2 Science Study Guide: Mixtures and Separation Techniques

Mixture

A combination of two or more substances where no chemical reaction occurs.

Solution

A mixture where one substance is dissolved in another (e.g., saltwater).

Suspension

A mixture where particles are dispersed but not dissolved (e.g., muddy water).

Solubility

The ability of a substance to dissolve in a solvent.

Filtration

A method to separate an insoluble solid from a liquid.

Evaporation

A method to separate a dissolved solid from a liquid by heating.

Distillation

A method that separates liquids based on boiling points.

Chromatography

A technique used to separate mixtures of dyes or pigments.

Variable

Something that can change in an experiment (independent, dependent, controlled).

Hypothesis

A testable prediction that explains what you expect to happen and why.

Sieving

Used to separate large solid particles from smaller ones (e.g., sand and gravel).

Independent Variable

What you change (e.g., type of separation method).

Dependent Variable

What you measure (e.g., clarity of the water, amount of substance recovered).

Controlled Variable

What you keep the same (e.g., amount of mixture, temperature).