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Physical and Chemical Properties

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latesha wilkins

on 3 December 2013

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Transcript of Physical and Chemical Properties

Learning Target: I will be able to compare physical changes such as size, shape, and state to chemical changes that are results of a chemical reaction to include changes in temperature, color, formation of gas or precipitate
Physical and Chemical Properties
What are physical and chemical properties?
Physical properties involve
things that can be measured without changing the chemical properties of matter.

A chemical property is a characteristic of a substance that
can be observed ONLY when the identity of the substance is changed.
What do physical and chemical changes have in common?
All physical and chemical changes involve a change in energy.
What are some examples of physical properties/changes?
What are some examples of chemical properties/changes?
Chemical change form new substances by breaking and making new chemical bonds.

Some clues may include
bubbles, smoke, a strong smell, color change, temperature change, or a sizzling sound.
How can you tell when a chemical reaction has occurred?
Evidence that a chemical change has occurred generally fits into these
categories; gas production (bubbling or an odor), formation of a precipitate, production of heat and a color change.
Phases of matter
Solid, liquid, gas
Energy can be absorbed or released in a chemical or physical change, it is not destroyed or created. It simply assumes a different form. This is the law of conservation of energy.
Physical properties include:
appearance, texture, color, odor, melting point, boiling point, density,
solubility, polarity and many others.

Physical changes can involve changes in energy which relate to the
three states of matter-solid, liquid and gas.
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