1. States of matter Flashcards
What are the 3 states of matter?
Gas, liquid and solid.
What is a particle model?
A particle model shows how particles are arranged and how they move.
Melting point
The temperature at which a pure substance melts and freezes.
Boiling point
The temperature at which a pure substance boils and condenses.
The stronger the force between particles….
The higher the melting point and boiling boint.
All substances are made from?
Atoms.
What is an atom?
The smallest part of an element.
What is an element?
A substance that contains only one typ of atom
What is a compound?
A substace that contains two or more elements chemically bonded
What is a mixture?
Two or more elements or compounds not chemicals not chemically combined together.
What is the technique used to seperate compounds? is it chemical or physical?
chemical reaction. it is chemical.
What is the technique used to seperate mixtures of liquids and insoluble solids? is it chemical or physical
Filtration. Physical
What is the technique used to separate liquids and soluble solids (solid retrieved)? Is it physical or chemical?
Crystallisation. Physical
What is the technique used to separate liquids and soluble solids (liquids retrieved)? Is it physical or chemical.
Simple Distillation
What is the technique used to separate of two or more liquids that have different boiling points. is it physical or chemical?
Fractional Distillation. Physical
