matter definition of matter. properties of matter. classification of matter. ...
Post on 12-Jan-2016
Embed Size (px)
MATTERDefinition of matter.Properties of matter.Classification of matter.Physical states of matter.Physical changes in matter.Chemical changes in matter.
WHAT IS MATTER?Matter is everything around us that has mass and takes up space. Matter can be solid, liquid or gas. Rocks, living things, water and air are examples of matter.
Matter is made up of tiny particles, called atoms. Some atoms join together to make groups known as molecules.WHAT IS MATTER?
PROPERTIES OF MATTER
MASSMass is the amount of matter in an object.We measure mass in grams or kilograms.PROPERTIES OF MATTERAn apple has greater mass than a grape.
VOLUMEVolume is the amount of space an object occupies. Bigger objects have more volume than smaller objects. We measure volume in litres or mililitres.PROPERTIES OF MATTERA car has larger volume than a motorcycle.
THERMAL CONDUCTIVITYThermal conductivity is the ability of certain objects to conduct or transfer heat. Most metals are good heat conductors.PROPERTIES OF MATTER
SOLUBILITYSolubility is the ability of a substance to dissolve in other substance and form a solution.Sugar dissolves well in water, whereas oil does not.PROPERTIES OF MATTER
HARDNESSHardness is the scratch-resistance of a solid.Diamonds are the hardest natural solids.PROPERTIES OF MATTER
DENSITYDensity is the amount of matter in a volume. We measure density in kilograms per litre (Kg/l)density= mass/volumeDensity explains why some objects float in water while others sink.PROPERTIES OF MATTER
PROPERTIES OF MATTERDENSITYDoes it float or does it sink? Why?Cork has a lower density than water. It floats!
Iron has a higher density than water.It sinks!
CLASSIFICATION OF MATTERAccording to its composition, matter can be classified into pure substances and mixtures.Pure substances are made up of only one type of matter.Mixtures are made up of two or more pure substances.
Silver or table salt are examples of pure substances.
Sand or chocolate milk are examples of mixtures.Heterogeneous mixtureHomogeneous mixture
SEPARATING DIFFERENT TYPES OF MIXTURESFiltration. Its used to separate solids from liquids in heterogeneous mixtures. Evaporation. Its used to separate solids from liquids in homogeneous mixtures. Distillation. Its used to separate liquids in homogeneous mixtures that boil at different temperatures.
THE PHYSICAL STATES OF MATTERSolids have a fixed volume and shape. Liquids have a fixed volume, but not a fixed shape. Gases dont have a fixed volume or shape.
PHYSICAL CHANGES IN MATTER
CHEMICAL CHANGES IN MATTERA new substance is produced. Oxidation. When substances combine with oxigen. It produces rustCombustion. When objects or substances are burned. It produces smoke and ashes.