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Copy of [Science: Chapter 2] Properties of Matter

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Becky Yubeta

on 26 August 2014

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Transcript of Copy of [Science: Chapter 2] Properties of Matter

Chapter 2
Properties of Matter
Physical Change
A change in a substance that does not change the substance into a different one.
Chemical Properties
A characteristic of a substance that describes how it can form a new substance.
Chemical Change
the change that occurs when one or more substances change into entirely new substances with different properties
L i
k e
Lighting a match
Alka seltzer in water
What is Matter?
Section 2.1
Density
A property of matter representing the mass per unit volume.
Signs of chemical change include:
• Production of odor
•Change in Temperature
•Change in color
•Formation of bubbles
•Formation of a solid
Section 2.2
Physical Properties
Melting

The process by which a solid becomes a liquid.
Melting Point
The temperature at which a substance changes from it's solid state to it's liquid state through melting.
Evaporation
The process when a liquid becomes a gas.
Condensation
The process when gas changes it's state to become a liquid.
Freezing
The process when a liquid becomes a solid.
Boiling
The process when a liquid becomes a gas.
Freezing Point
The temperature when a specific liquid becomes a solid
Boiling Point
Then temperature when a substance changes from it's liquid state to it's gas through boiling.
Properties Identify Substances.
Section 2.3
Heating Properties
The way a substance reacts by heating.
Solubility
A measure of how much of a substance dissolves in a given volume of a liquid.
Electric Properties
The way substances conduct electricity, letting an electric charge to move through easily.
Magnetic Properties
Substances attracted by a magnetic force.
Chemical Property
a property of matter that describes a substance's ability to participate in chemical reactions
Example:
Example:
Melting point of water is above 0 degrees Celsius, while the melting point of iron is over 1500 degrees Celsius.
Example:

Water freezing into ice.
Example:
The boiling point of water is 100 degrees Celsius, and depending on what substance, it has a different boiling point. Like the boiling point of iron is 2862 degrees Celsius.
Example:

Like food heating in the microwave. Depending on what your heating up, it reacts different to others who need more or less heat.
Example:
When sugar dissolves in a glass of hot water.
Example:
Like when you rub you socks on a fuzzy carpet.
Describe the two properties of all matter
Identify the units used to measure volume and mass
Compare mass and weight
Explain the relationship between mass and inertia
Objectives
Matter
anything that has mass and takes up space
Volume
the amount of space taken up or occupied by an object
Meniscus
the curve at the surface of a liquid
Mass
Weight
the measure of the amount of matter in an object
measure of the gravitational force on an object
Inertia
is the tendency of an object to resist a change in motion
Objectives:
Identify six examples of physical properties of matter
Describe how density is used to identify substances
List six examples of physical changes
Explain what happens to matter during a physical change
Physical Property
a characteristic of a substance that does not involve a chemical change, such as density, color, or hardness
Thermal Conductivity
Examples of Physical Properties
State
the physical form in which a substance exists: solid, liquid or gas
Density
mass per unit volume of a substance
Solubility
the ability of a substance to dissolve in another substance
Physical Change
a change of matter from one form to another without a change in chemical change
Objectives:
Describe two examples of a chemical properties
Explain what happens during a chemical change
Distinguish between physical and chemical changes
Chapter2-3
Reactivity with oxygen
the nail reacts with oxygen in the air to form iron oxide (rust)
alka seltzer reacts in water
Example:
Full transcript