| Exothermic and Endothermic Reactions | Physical and Chemical Properties | Elements, Compounds, and Mixtures | Chemical and Physical Changes | Classifying Matter |
|---|---|---|---|---|
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What is an endothermic reaction?
Evaporation.
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What is melting point?
The point at which a substance melts.
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What is a heterogeneous mixture?
A mixture where the different parts can be seen.
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What is a physical change?
Tearing a piece of paper in half.
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What is a mixture?
Two or more sub.stances that are together in the same place, but are not chemically combined
|
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What is an exothermic reaction?
Burning propane gas.
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What is malleability?
The ability of a substance to be hammered into flat sheets.
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What is a homogeneous mixture?
Sugar is an example of this type of mixture.
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What is a physical change?
Melting
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What is heterogeneous?
A mixture that has different composition throughout. Tacos is an example.
|
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What is an exothermic reaction?
Fireworks exploding.
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What is flammabilty?
The ability of a substance to burn in the presence of oxygen.
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What is a compound?
Two or more substances chemically combined in a set ratio.
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What is a chemical change?
Leaves turn color in the fall.
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What is an element?
Oxygen is an example.
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What is an endothermic reaction?
Frying an egg.
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What is viscosity?
The resistance to flowing.
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What is a molecule?
Two or more atoms chemically bonded.
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What is a chemical change?
Tarnishing.
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What are compounds?
Water (H2O) and Carbon Dioxide (CO2) are examples of this.
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What is an exothermic reaction?
Freezing water to make an ice cube.
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What is conductivity?
The ability of a substance to allow heat or electricity to flow through it.
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What is an atom?
The basic particle that makes up an element.
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What is a chemical change?
A reaction with acid.
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What is a homogeneous mixture?
Brass (combination of Copper - Cu and Zinc - Zn) is an example of this type of mixture?
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