Properties of Matter

Goal 1: Classifying Different Types of Matter ____________ – can’t be broken down into simpler substances by chemical means (ex. _________) ____________ – when different elements join together (ex. _________) ___________________ Mixture – uniform in make-up throughout a sample but one sample may differ from another sample (ex. _____________) ______________ Mixture – separate distinct regions may exist in the sample (ex. __________________)

Smallest part of pure substances Element – atoms Ionic compounds exist as __________ ex. NaCl (_____________) repeats of Na and Cl in a ____:____ ratio Molecular compounds - separate molecules ex. ________ (glucose)

Using a chemical formula to determine the number of each type of atom in a compound H2O water has 2 __________ and 1 ____________ NaCl salt has ___ sodium for every ___ chlorine C6H12O6 glucose has ___ carbons, ___ hydrogens and ___ oxygens Watch out! CO vs. Co

Physical vs. Chemical Blending _____________ – individual components of the blend will maintain their chemical identities _____________ – components of the mixture will undergo chemical change and not be found in their initial form in the blend

Goal 2: Identifying, Classifying and Changing Matter

Particles in Solids, Liquids and Gases Kinetic Theory Java applet

Relationship of Physical State to Temperature

Physical vs. Chemical Properties and Changes Physical properties – ______, ______, _______, ________, ________, _______ point and __________ point are examples Chemical properties – __________, corrosiveness and ___________ are examples Physical changes – change of _______ (melt) Chemical changes – _________________ (rust)

Inorganic vs. Organic Compounds __________ – compounds containing CHNOPS ___________ – compounds not containing C (some exceptions: elemental C, Carbon oxides) __________ Compounds _______ melting points __________ structures Exist as ____________

Goal 3: Law of Conservation of Matter and Energy Chemical Reactions – Products vs. Reactants _____________ = hydrogen and oxygen _____________ = water

Mass remains constant in chemical and physical changes Matter is not _______ / _______ in chemical reactions 2H2 + O2   -->   2H2O The amounts of hydrogen and oxygen are _____ _________ before and after the ____________