Chapter 3 Matter and Energy Guided Notes Homework.docx

Chapter 3 Matter and Energy Guided Notes Homework.docx - Ch...

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Chapter 3 Matter and Energy Ch. 3 Vocab to Know! boiling boiling point (bp) calorie (cal) change of state chemical change chemical properties compound condensation cooling curve deposition element energy energy value evaporation freezing freezing point (fp) gas heat melting melting point (mp) mixture physical change physical properties potential energy pure substance solid specific heat (SH) states of matter sublimation Chapter 3 Preview 3.1 Classification of Matter 3.2 States and Properties of Matter 3.3 Temperature 3.4 Energy 3.5 Energy and Nutrition 3.6 Specific Heat 3.7 Changes of State
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3.1 Classification of Matter Learning Goal Classify examples of matter as pure substances or mixtures. Matter is the material that makes up all things is anything that has mass and occupies space Matter is classified according to its composition: Pure substances have a fixed or definite composition. Mixtures contain two or more different substances that are physically mixed but not chemically combined Pure Substances: Elements and Compounds A pure substance is classified as a type of matter with a fixed or definite composition an element that is composed of one type of atom a compound that is composed of two or more elements always combined in the same proportion Elements Elements are pure substances that contain only one type of material, such as copper (Cu), lead (Pb), and aluminum (Al) Compounds A compound contains two or more elements in a definite ratio, such as hydrogen peroxide (H 2 O 2 ) table salt (NaCl) sugar (C 12 H 22 O 11 ) water (H 2 O) Can be identified by the compound [chemical] formula Mixtures: A mixture is a type of matter that consists of two or more substances that are physically mixed but not chemically combined two or more substances in different proportions substances that can be separated by physical methods Homogeneous Mixtures In a homogeneous mixture , the composition is uniform throughout the different parts of the mixture are not visible Heterogeneous Mixtures In a heterogeneous mixture , the composition varies from one part of the mixture to another the different parts of the mixture are visible Study Check Identify each of the following as a pure substance or a mixture:
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A. pasta and tomato sauce B. aluminum foil C. helium D. air Identify each of the following as a homogeneous or heterogeneous mixture: A. hot fudge sundae B. shampoo C. sugar water D. peach pie 3.2 States and Properties of Matter Learning Goal Identify the states and physical and chemical properties of matter. Solids Solids have a definite shape a definite volume particles that are close together in a fixed arrangement Liquids Liquids have an indefinite shape but a definite volume the same shape as their container particles that are close together but mobile particles that move slowly
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  • Spring '14
  • AnilC.Banerjee
  • Chemistry

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