Models of Matter (Particle Theory)

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PARTICLE THEORY : 

PARTICLE THEORY 1 M. Bregar (Dante C.S.S)

MATTER : 

MATTER Matter is anything which has mass & takes up space (VOLUME) Matter is what makes up everything around us. 2 M. Bregar (Dante C.S.S)

Slide 3: 

What is matter made of? 3 M. Bregar (Dante C.S.S)

THE ANSWER? : 

THE ANSWER? 4 M. Bregar (Dante C.S.S)

DEMOCRITUS : 

DEMOCRITUS Greek “thinker” had an idea If you continued cutting something up into smaller pieces, eventually you would get to the smallest particle He called these particles “ATOMA” 5 M. Bregar (Dante C.S.S)

THE PARTICLE THEORY : 

THE PARTICLE THEORY Has four principles: All matter is made up of tiny particles 6 M. Bregar (Dante C.S.S)

THE PARTICLE THEORY : 

THE PARTICLE THEORY A substance is made of the same type of particle. Different substances are made of different particles. SUBSTANCE A SUBSTANCE B 7 M. Bregar (Dante C.S.S)

THE PARTICLE THEORY : 

THE PARTICLE THEORY Particles are always moving. The more energy they have, the faster they move. 8 M. Bregar (Dante C.S.S)

HOW DO WE KNOW PARTICLES ARE MOVING? : 

HOW DO WE KNOW PARTICLES ARE MOVING? 9 M. Bregar (Dante C.S.S)

THE PARTICLE THEORY : 

THE PARTICLE THEORY 10 M. Bregar (Dante C.S.S)

HOW DO WE KNOW PARTICLES ARE MOVING? : 

HOW DO WE KNOW PARTICLES ARE MOVING? 11 M. Bregar (Dante C.S.S)

MOVING PARTICLES & DISSOLVING : 

MOVING PARTICLES & DISSOLVING Particle Theory explains how dissolving works 12 M. Bregar (Dante C.S.S)

THE PARTICLE THEORY : 

THE PARTICLE THEORY Particles have forces of attraction between them. The closer the particles are, the stronger the attraction force is. 13 M. Bregar (Dante C.S.S)

STATE OF MATTER : 

STATE OF MATTER There are 3 states of matter: solid, liquid, and gas 14 M. Bregar (Dante C.S.S)

STATES OF MATTER : 

STATES OF MATTER SOLIDS Strongest attractive forces Require most energy to break apart Results in a fixed shape 15 M. Bregar (Dante C.S.S)

STATES OF MATTER : 

STATES OF MATTER 16 M. Bregar (Dante C.S.S)

STATE OF MATTER : 

STATE OF MATTER LIQUIDS Particles not held together as tightly because of weaker attractive forces This results in liquids not being able to hold their shape 17 M. Bregar (Dante C.S.S)

STATES OF MATTER : 

STATES OF MATTER 18 M. Bregar (Dante C.S.S)

STATE OF MATTER : 

STATE OF MATTER GASES Almost no force holding atoms together This results in gases spreading out when not in a container. Gases can’t hold their shape or volume. 19 M. Bregar (Dante C.S.S)

STATES OF MATTER : 

STATES OF MATTER 20 M. Bregar (Dante C.S.S)

STATES OF MATTER : 

STATES OF MATTER To change the state of matter you must increase the speed of particles But How? 21 M. Bregar (Dante C.S.S)

STATES OF MATTER : 

STATES OF MATTER 22 M. Bregar (Dante C.S.S)

STATES OF MATTER : 

STATES OF MATTER Change states of matter by heating the substance. 23 M. Bregar (Dante C.S.S)

STATES OF MATTER : 

STATES OF MATTER 24 M. Bregar (Dante C.S.S)

EVAPORATION : 

EVAPORATION 25 M. Bregar (Dante C.S.S)

CLASSIFYING MATTER : 

CLASSIFYING MATTER Matter can be classified as PURE SUBSTANCES Substances containing particles which are chemically joined Can’t be separated easily MIXTURES Substances containing particles which are not chemically joined. Can be separated easily 26 M. Bregar (Dante C.S.S)

PURE SUBSTANCES : 

PURE SUBSTANCES 27 M. Bregar (Dante C.S.S)

PURE SUBSTANCES : 

PURE SUBSTANCES What are pure substances? Substances containing atoms which are chemically joined Can’t be separated easily There are two types of pure substances: Elements Compounds 28 M. Bregar (Dante C.S.S)

PURE SUBSTANCES : 

PURE SUBSTANCES What does chemically joined mean? Means 1 or more atoms are kept together by their attractive forces for each other These atoms are kept together and act as a “couple” 29 M. Bregar (Dante C.S.S)

PURE SUSBTANCES : 

PURE SUSBTANCES ELEMENTS Substances containing 1 type of atom Example – Oxygen has a chemical formula of O2 There are 2 types of pure substances 30 M. Bregar (Dante C.S.S)

PURE SUBSTANCES : 

PURE SUBSTANCES COMPOUNDS Contain 2 or more different types of atoms in a fixed proportion Example – Water has a chemical formula of H2O 31 M. Bregar (Dante C.S.S)

MIXTURES : 

MIXTURES 32 M. Bregar (Dante C.S.S)

MIXTURES : 

MIXTURES What are mixtures? Substances containing atoms which are NOT chemically joined Can be separated easily There are two types of mixtures: Heterogeneous Mixtures Homogeneous Mixtures 33 M. Bregar (Dante C.S.S)

MIXTURES : 

MIXTURES Mixtures can be separated easily. 34 M. Bregar (Dante C.S.S)

PURE SUBSTANCE vs. MIXTURES : 

PURE SUBSTANCE vs. MIXTURES TAP WATER WOULD BE A _________________ DISTILLED WATER WOULD BE A _________________ 35 M. Bregar (Dante C.S.S)

TYPES OF MIXTURES : 

TYPES OF MIXTURES HOMOGENOUS MIXTURES Also called SOLUTIONS Can’t see individual parts of the mixture Looks like one thing……. but a solution can be separate easily There are 2 types of mixtures 36 M. Bregar (Dante C.S.S)

HOMOEGENOUS MIXTURES : 

HOMOEGENOUS MIXTURES In a homogenous mixture, the individual parts are ``evenly spread out`` So it looks like ``one thing`` 37 M. Bregar (Dante C.S.S)

HOMOGENOUS MIXTURES : 

HOMOGENOUS MIXTURES Milk 38 M. Bregar (Dante C.S.S)

TYPES OF MIXTURES : 

TYPES OF MIXTURES HETEROGENOUS MIXTURES You can see the individual parts of the solution There are 2 types of mixtures 39 M. Bregar (Dante C.S.S)