Matter and Physical

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Matter and Physical Chemical Changes
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Classifying Matter

• Matter is used to describe anything that has mass
  and takes up space.
• Matter can be divided into two categories
• Mixtures contain more than one kind of matter
  and can be separated by physical means
• Substances may contain more than one kind of
  matter but cannot be separated by physical means.

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• Mixtures can be divided into two different
  categories homogeneous and heterogeneous
  Substances can be either an element or a compound

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Homogeneous

• A Homogenous mixture is the same throughout.
  Every sample of a homogenous mixture is the same.

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Heterogeneous

• A Heterogeneous mixture is one in which different
  samples are not exactly the same.

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Matter

• The smallest possible
  particle of a compound that
  retains the properties of the compound is a
  molecule.
• The smallest possible
  particle of an element is
  called an atom.

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States of Matter

• Elements and compounds are usually found in one
  of three different states of matter solid,
  liquid, gas.
• The molecules in solids, liquids, and gases all
  vibrate differently and as a result have
  different properties.

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• A solid retains its shape and size.
• A liquid will take the shape of whatever
  container it is in.
• Gases have neither a shape or size.

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Changing State

• The movement of the molecules change. The number
  of molecules does not change.
• The mass of the substance remains the same
  whether it is in a solid, liquid, or gas state.

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Phase Changes
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Phase Changes
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Chemical vs. Physical Properties

• Chemical properties are properties of an element
  or compound in chemical reactions. For example,
  the fact that sodium reacts with water is a
  chemical property.
• Physical properties are properties of an element
  or compound that can be observed without a
  chemical reaction of the substance. A substance's
  color and density are physical properties.

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Chemical vs. Physical Changes

• In a physical change, the substances are not
  altered chemically, but merely changed to another
  phase (i.e. gas, liquid, solid) or separated or
  combined.
• In a chemical change, the substances are altered
  chemically and display different physical and
  chemical properties after the change.
• http//www.bcscience.com/bc9/pgs/videos_012_chemch
  ange.html

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Physical Change

• Physical changes occur when matter changes its
  property but not its chemical nature.
• Physical property changes could include a change
  in texture, shape, size, color, odor, volume,
  mass, weight, and density.

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Physical Change
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Chemical Change

• Chemical changes are changes matter undergoes
  when it becomes new or different matter.
• To identify a chemical change look for signs such
  as color change, bubbling and fizzing (gas or
  odor), light production, smoke, and presence of
  heat.

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Chemical Change

• A chemical change occurs when fireworks are used.
  Fireworks are made of metals such as magnesium
  and copper. These change chemically as they
  light up the sky.

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Is it a chemical or physical change?

• Sugar dissolving in tea

• Chemical Change

• Physical Change

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Is it a chemical or physical change?

• Logs burning

• Chemical Change

• Physical Change

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Is it a chemical or physical change?

• Breaking water up by separating it into hydrogen
  and oxygen

• Chemical Change

• Physical Change

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Is it a chemical or physical change?

• Cutting paper

• Chemical Change

• Physical Change

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Is it a chemical or physical change?

• Metal rusting

• Chemical Change

• Physical Change

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Is it a chemical or physical change?

• Lighter fluid burining

• Chemical Change

• Physical Change

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Is it a chemical or physical change?

• An egg rotting

• Chemical Change

• Physical Change

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Is it a chemical or physical change?

• An egg breaking

• Chemical Change

• Physical Change

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Explain the photo

• Describe
• 1. what just occurred
• 2. what is currently occurring
• 3. What will occur