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1. What is a mixture?
- a substance made by mixing other substances together
2. How are they classified? What determines which type of mixture a substance is?
- They are classified as heterogeneous or homogeneous. Heterogeneous mixtures have visible layers, and homogeneous mixtures have a uniform appearance.
3. Give examples of each type?
- Heterogeneous-> pizza, rocks in the sand, banana splits.
Homogeneous-> Milk, kool-aid, blood, glue, lotion.
4. How can all mixtures be separated?
- Through a filtration process.

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the basic unit of a chemical element. An atom is made of a nucleus, protons, and neutrons

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The first part of this theory states that all matter is made of atoms, which are indivisible. The second part of the theory says all atoms of a given element are identical in mass and properties. The third part says compounds are combinations of two or more different types of atoms.

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made up or consisting of several parts or elements

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substances that cannot be chemically inter-converted or broken down into simpler substances

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a substance made by mixing other substances together

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substances that are made of only one type of atom or only one type of molecule

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A chemical property is any of a material's properties that becomes evident during, or after, a chemical reaction; that is, any quality that can be established only by changing a substance's chemical identity.  Some common chemical properties are heat of combustion, enthalpy of formation, toxicity, and flammability.

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Physical properties can be observed or measured without changing the composition of matter. Physical properties are used to observe and describe matter. Physical properties include: appearance, texture, color, odor, melting point, boiling point, density, solubility, polarity, and many others

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Physical Properties: conductive assemblies of charged particles, carry electrical currents and generate magnetic fields. The particles in plasma are very spread apart and move very fast.

Common examples:  Lightning, auroras, the upper atmosphere (the ionosphere), stars and the sun, the solar wind, interstellar gas clouds

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Physical Properties: provide conclusive evidence of chemical composition include odor, color, volume, density, melting point, boiling point, heat capacity, physical form and shape at room temperature. The particles in solid are tightly packed and can only vibrate.

Common examples: wood, sand, ice, bricks and steel

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Physical properties: almost in-compressible, have fixed volume but no fixed shape.They have fixed volume but they do not have fixed or definite shape, flow from higher to lower level, have their boiling points above room temperature under normal conditions. The particles in a liquid are together, but are able to move around each other.

Common examples: water, blood, wine, coffee and rubbing alcohol

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Physical properties: pressure, volume, number of particles, and temperature. The particles in a gas are spread out and bonce off each other.

Common Examples: helium, nitrogen, Freon, carbon dioxide, water vapor, hydrogen.