BLUE 1. Add BLUE ToC to NB P ◦ TITLE: Elements & the Periodic Table 1

 What is the difference between a mixture and a pure substance? Illustrate & describe. 2

 Matter can be classified as a mixture or a pure substance.

A pure substance always has the same composition throughout the substance. Pure substances are of two types:.Elements and Compounds. Water is a compound. All the components are the same—H2O molecules.

one type of atom CANNOT  Elements are made of only one type of atom and CANNOT be broken down chemically into simpler substances.  Ex. Gold, iron, hydrogen two or more different types of atoms  Compounds are made of two or more different types of atoms and can be chemically broken down into elements. Ex. Water or H 2 O can be broken down into hydrogen and oxygen by using electricity  Molecules formed when two or more atoms join together chemically. ◦ All compounds are molecules but not all molecules are compounds. 6

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 Read the question to yourself FIRST  Decide on your answer INDEPENDENTLY. shout out  On the count of 3 you will shout out what you think is the correct answer.  Use your self-control when “shouting”. 8

9  Copper Wire Element

◦ ozone 10 Molecule

11 Compound & Molecule

 Aluminum 12 Element

 When material is added to a gas or liquid, the material added is called the solute and the material the solute is added to is called the solvent. 13

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 When a solute such as sugar is added to a solvent such as water the final product will be a solution (e.g. sugar water)!  Solute= solid part that GETS dissolved.  Solvent= the liquid part that DOES the dissolving. 16

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 A mixture in which different materials can be easily distinguished.  Heterogeneous mixtures are those where the substances are not distributed evenly.  They have different properties in different parts of the mixture.  They usually involve a mixture of a solid in a solid.  Pizza, dry soup, chex mix, trail mix are all examples.

 Exist where materials are evenly distributed throughout.  The mixture has the same properties throughout. ◦ Ex. Vanilla ice cream, lemonade, air in vacant room.

1. suspensions 2. colloids 3. solutions

 Suspension mixtures have larger particles in a liquid or gas.  Most mixtures are suspension mixtures.  A suspension is a heterogeneous mixture containing a liquid in which visible particles settle. ◦ Italian salad dressing is a good example ◦ River water, snow globe

◦ A homogenous mixture in which two or more substances are uniformly spread out.  For example salt water.

 A colloid is a homogeneous mixture that like a solution never settles. ◦ Milk, mayonnaise, and smoke are examples.  Properties of both solutions and suspensions  One way to tell a colloid from a solution is that you cannot see clearly through a colloid and the particles never settle out. ◦ Ex. milk appears white because its particles scatter light. (Called the Tyndall Effect.)

24  You will have seconds to answer each question  A blank board is NOT acceptable.  No Doodling!  When you are finished writing your answer, put your board face down on your desk until I say “boards up!”

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32 Solute Solvent = ?? +

 Add notes to NB P.53.  Put away whiteboarding materials. 33

 Your group will be tasked with sorting your cards at the table into three groups: ◦ Elements, Compounds, and Mixtures  Upon completion raise your hand to get checked! 34

 Add to NB P

 EXIT QUIZ TIME!!! 36

37  Compounds versus Mixtures  (If time)

 Provide two examples for EACH vocabulary word in the chart below. 38 ElementCompoundHomogenous Mixture Heterogeneous Mixture Molecule 1 2

A mixture is a combination of two or more substances where there is no chemical combination or reaction. Mixtures combine physically in no specific proportions. They just mix. Solids, liquids and gases can be combined to create a mixture.