MATTER AND FORCES

MATTER AND FORCESAlberto Serna Ramrez 5 de Primaria Unit 7

THREE STATES OF MATTER

PROPERTIES OF MATTER

MATTER AND ITS PROPERTIESMatter is everything around us. Atoms matter is made out of tiny particles called atoms.Molecules atoms join together to make groups called molecules.

Properties

odour taste colour

PROPERTIES OF MATTER VOLUME how much space matter occupies. We measure volume in ( ml ). 1000 ml = 1 l.

DENSITY amount of matter in a volume. We measure density in ( kg / l ). Density = mass / volume.

MASS amount of matter in an object. We measure mass in ( g ). 1000 g = 1 kg.

HARDNESS is the scratch resistance of a solid.

THERMAL CONDUCTIVITY ability to conduct or transfer heat.

CONDUCTORS INSULATORS Metals Wool Iron Wood Copper Paper

SOLUBILITY ability of a substance to dissolve in another substance.

VOLUME

DENSITY

MASS

HARDNESS

THERMAL CONDUCTIVITY

SOLUBILITY

WHAT TYPES OF MATTER ARE THERE ? Pure substances consist of only one type of matter ( silver, gold, salt ). Mixtures is made up of two or more substances.

HOMOGENEOUS cannot see individual substances ( air, sea water ). TYPES HETEROGENEOUS we can see individual substances ( sand, salad ).

METHODS TO SEPARATE SUBSTANCES FILTRATION using a filter.

EVAPORATION heating.

SIEVING using a sieve.

EXAMPLES OF PURE SUBSTANCES

HOMOGENEOUS AND HETEROGENEOUS

FORCES AND THEIR EFFECTSA force is a push or pull that acts on an object. Forces can make things move, stop speed up, slow down or change direction.

TWO FORCESNon contact forces Contact forces

NON CONTACT FORCES Magnetism is a force of attraction or repulsion magnetic materials. Examples metals. Gravity is a force which attracts all objects towards each other. Planets have a stronger gravitational force. Examples astronauts float in space because there is no gravity.

CONTACT FORCES Friction is the force that exists when two objects rub against each other. Buoyancy is the ability to objects to float. Examples ice cube, submerged.