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TRANSCRIPT
OUTLINEProperties of MatterStates of matterPhysical propertiesChemical properties
Changes in MatterPhysical changesChemical changes
Mixtures, Elements and Compounds
Heterogeneous, Homogeneous mixturesSeparating MixturesElements and Compounds
WHAT IS MATTER?
Everything in the universe is made of matter.
Matter is made of tiny particles called atoms.
STATES OF MATTERAll matter exists as one of the three
physical forms, which are called the states of matter.
Solid Liquid Gas
Definite Shape
Definite Volume
Particles held tightly together
PHYSICAL PROPERTIESA physical property is a characteristic of matter
that can be observed directly or measured without changing the substance’s composition.
Examples of Physical Properties are:
Boiling point Ductility
Melting point Elasticity
Density Brittleness
Color Malleability
Odor
CHEMICAL PROPERTIESCharacteristic of matter that describes how it
reacts or changes into a different substance.
Examples of Chemical Properties:
Flammability
Reactivity with acids
Ability to rust
IDENTIFYING CHANGESPhysical Changes
Physical state
Chemical Changes: different substance
TYPES OF CHANGE
Type of Change
Products of Change
Physical Change No new substance, but physical state is changed.Example:_____________________
Chemical Change
New substances are formed.Also called a chemical reaction.Example:_____________________
CHEMICAL REACTIONSA chemical reaction is a process in which atoms
of one or more substances rearrange to form one or more new substances.
When a new substance(s) is formed, there are indications.
• Color Change• Change in odor• Formation of Bubbles• Formation of
Precipitate
• Temperature change• Light
CONSERVATION OF MASSThe Law of Conservation of Mass
states that mass is neither created nor destroyed during a chemical reaction. Mass is always conserved in a chemical reaction.
CHEMICAL REACTIONS AND CHEMICAL EQUATIONS
Chemical reactions are written in the form of a chemical equation.
The starting substances are called the reactants.
The substances produced, or formed, are called the products.
Reactant + Reactant Product + Product
Eg.
ELEMENTS AND COMPOUNDSAn element is a pure substance that cannot be
separated into simpler substances by any means.
Each element has a name and a chemical symbol.
Elements are organized in the periodic table.
A compound is made up of two or more different
elements that are joined by chemical bonds.
ELEMENTS AND COMPOUNDS
Both elements and compounds are pure substances.
A mixture is a mix of multiple different types of pure substances.eg. coffee is a mix of water and coffee extract.