Chapter 2 Matter and Change 2.1 Properties of Matter 2.2 Mixtures

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Chapter 2 Matter and Change 2.1 Properties of Matter 2.2 Mixtures 2.3 Elements and Compounds 2.4 Chemical Reactions Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. .

Do Now: 1. Take out your Safety Poster. 2 Do Now: 1. Take out your Safety Poster. 2. Read Intensive / Extensive Properties Handout. What is the difference between intensive and extensive properties? Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. .

State (solid, liquid, gas) Color Melting point Hardness Conductivity Describing Matter Physical Property – characteristic that can be observed or measured WITHOUT changing a substance’s composition Examples: State (solid, liquid, gas) Color Melting point Hardness Conductivity Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. .

Physical Properties Intensive Properties Extensive Properties Depend on the type of matter in a sample. Does NOT depend on the amount. Examples: Density Temperature Melting & Freezing Points Boiling Point Concentration Depend on the amount of matter in a sample. Examples: Mass Volume Length Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. .

Identifying a Substance Describing Matter Identifying a Substance Substance - Matter that has a uniform and definite composition We can use intensive properties to identify a substance because every sample of a substance has identical intensive properties. Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. .

Physical Properties of Some Substances Interpret Data Physical Properties of Some Substances Substance State Color Melting point (°C) Boiling point (°C) Neon Gas Colorless –249 –246 Oxygen –218 –183 Chlorine Greenish-yellow –101 –34 Ethanol Liquid –117 78 Mercury Silvery-white –39 357 Bromine Reddish-brown –7 59 Water 100 Sulfur Solid Yellow 115 445 Sodium chloride White 801 1413 Gold 1064 2856 Copper Reddish-yellow 1084 2562 The states of the substances are given at room temperature. Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. .

States of Matter Copper Video http://www.pbslearningmedia.org/resource/nvhe.sci.chemistry.copper/the-value-of-copper/ Copper Price Trend http://www.macrotrends.net/1476/copper-prices-historical-chart-data Value of a Penny http://www.coinflation.com/coins/basemetal_coin_calculator.html Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. .

END OF 2.1 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. .