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Chemical Properties Chemical Properties: characteristic of matter that can be observed as it changes to a different type of matter.
Chemical Changes Chemical Change: Change in matter in which the substances that make up the matter change into other substances with new physical and chemical properties.
Signs of Chemical ChangeFormation of Bubbles Change in Odor Color Change Energy Change
Chemical Equations Reactants: Present before the reaction (left side of equation) Products: New substances formed during the reaction (right side of equation) Arrow = yields or gives 2H2 + O H2O
Rate of Reactions To increase the rate of the reaction:Increase the temperature Increase the concentration Increase the surface area
Law of Conservation of MassThe total mass before and after a reaction is the same (i.e. Mass is neither lost nor gained).
Heat and Temperature All particles are always in motion, even in solids. Kinetic energy= The energy of motion. Heat= a measure of the total kinetic energy.
Chapter 10 – Introduction to Equations
P HYSICAL P ROPERTIES Physical property – characteristic that can be observed without changing the composition of a substance Appearance includes things.
CHEMICAL EQUATIONS, SYMBOLS, FORMULAS & LAW OF CONSERVATION 7-5.5, &
Chapter 20 – Chemical Reactions 20.1 – Chemical Changes Physical change occurs when only the physical properties of a substance changes. Evidence: change.
Evidence of Chemical Reactions
Nature of Chemical Reactions Objectives: 1. Describe the Characteristics of a chemical reaction. 2. Distinguish between reactants and products. Key Terms:
Changes Physical & Chemical. Physical Change A physical change is a change in size, shape, form, or state of matter in which the matter’s identity stays.
Twenty Questions Review for Test Twenty Questions
Chemical Reactions Chapter 2 Section 1 & 2.
Properties and Changes. Physical Properties Can be observed or measured. Density Color Odor Taste Hardness Melting point Boiling point Extensive or Intensive?
2.11 Describing Chemical Reactions (Sec 9.1 pg )
Do Now Please write HW in your agenda. Please update your table of contents. Please take the sheets from the front cart and place them in your notebook.
Unit 3 Chemical Reactions 3.1 What is a chemical equation? AIM: How can we determine if mass is conserved in a chemical reaction? DO NOW: 1.Why do atoms.
8th grade Science Chemical formulas and equations.
$200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $ 300 $400 $500 $100 $200 $300 $400 $500 $100 Classifying Matter Physical.
Properties and Changes in Matter
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