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Ch. 2 Sec. 1-3 Matter and Energy Matter has mass and volume Matter is made of atoms Matter combines to form different substances Different States of Matter 100 200 300 400 500
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Texture, shape, size, and color are all examples of... Physical Properties
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True or false. When the state of matter change, it is considered to be a chemical change. False; only the arrangement of the atoms changes.
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Density describes the relationship between a substance’s A.matter and mass B.mass and volume C.volume and are D.temperature and mass B. Mass and Volume
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What is the formula to determine density? Mass divided by volume (m/v)
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The only TRUE indication that a chemical change has taken place is... A new substance is being formed!
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Name ONE of the FIVE indicators that a chemical change has taken place. 1.Color Change 2.Formation of a gas 3.Formation of a solid 4.Production of an odor 5.Temp. change
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What is the process in which a solid becomes a liquid?. Melting
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What are the two processes in which a liquid becomes a gas? Evaporation and Boiling
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How do evaporation and boiling differ? A.In evaporation, there’s a formation of gas. B.In boiling there’s a formation of gas. C.In evaporation, a gas becomes a liquid D.In boiling, a gas becomes a liquid. B. In boiling, there’s a formation of gas
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How do the freezing point and melting point of a substance relate? They are the same temperature!
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What is the process in which a solid changes directly into a gas? Sublimation
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What is the boiling point of water? 100 degrees Celsius or 212 degrees Farenheight
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What is the process in which liquid becomes a solid is known as Freezing
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__________ is the measure of how much of a substance dissolves in a given volume of a liquid. Solubility
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True or false. You should always use your five senses to help you identify a substance. FALSEEEEEE!! AHHH
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What process is this picture depicting? Melting
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What is the unit used for density? g/cm cubed
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Whether a substance is a solid, liquid, or gas depends on how close its atoms are to one another and... How free the atoms are to move
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True or False. Particles in a liquid of any temperature will move at the same rate. FALSE. They will move faster at higher temperatures.
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FALSE. Many items may have the same densities. True or False. You can identify a substance’s identity just based on its density.
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