1. Question Notes Tool Box: Summary: (Answer EQ- completed after notes)
Topic/ Objective: Understand how studying chemistry relates to matter. Name Date Essential Question: Summarize the importance of matter as we study chemistry. Period
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Summary: (Answer EQ- completed after notes)
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2. 2.1 Properties of Matter Depends on amount of matter; mass and volume
Depends on the type of matter the object is made of; hardness
Identical intensive properties/ same composition
Solids, liquids, gases (vapor if gas at room temp.)
Properties change but material does not; boil, condense, split, cut
Extensive Properties
Intensive Properties
Substance
States of matter
Physical changes

3. 2.2 Mixtures Types of mixtures? Solutions vs suspensions
Separating Mixtures?
Heterogeneous: “ingredients” or many parts to composition
Homogeneous: composition uniform; aka solution
Solution: solute “dissapears” but takes up space; Suspension: non-dissolved material
Use physical properties to separate
Filtration: separate solid from liquid
Distillation: boil liquid, condense to liquid with removed impurities

4. 2.3 Elements and Compounds
Element simplest form with chem properties; compound 1+ elements
Change that also changes the composition of matter; break chem bonds
Substance has fixed composition; mixture the composition varies; 2.11
Represent elements
Chemical formulas represent compounds
Element vs Compound
Chemical changes
Substance vs mixture
Chemical symbols

5. 2.4 Chemical Reactions
Chem rxn changes the chem bond joining compounds; chem property can undergo chem change
Release E- spontaneous rxn
Absorb E- need E source to start rxn
Trans E, change in color, gas/ bubbles, form precipitate
In chem rxn mass of products = mass of reactants; mass is neither created/ destroyed in phys change or chem rxn
Chem rxn affects chem bond
How E changes affect chem rxn
Evidence of a chem change?
Conservation of mass