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Compounds, Mixtures, & Solutions. WARM - UP. Update your Table of Contents Write your homework – leave it to be stamped Get your homework out to be checked – we will go over it! Get ready for a Quick Chemistry Recap!. Ion “Cheater” Chart Double Check. Equation Challenge-.
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WARM - UP • Update your Table of Contents • Write your homework – leave it to be stamped • Get your homework out to be checked – we will go over it! • Get ready for a Quick Chemistry Recap!
Equation Challenge- H2O(liquid) H2O(gas) Same molecule on each side of the equation – structure or identity stayed the same One side has liquid water, the other side has gaseous water – phase change No bonds were broken – PHYSICAL CHANGE CH4 + 2O2 CO2 + 2H2O Same elements on each side of the equation – BUT structure or identity has changed Different compounds have formed on each side of the equation There have been chemical bonds broken, atoms rearranged, & new bonds created – CHEMICAL CHANGE
Notes Away – Whiteboards Out • Number 1, 2, 3
Basics -1 min • Everything is _________. • All MATTER is made of _______. • An ____________ is a substance made up of only 1 type of ATOM. MATTER ATOMS ELEMENT
Periodic Table – 2 min • All ELEMENTS are displayed on the ____________________…simplest substances; ingredients for everything else on Earth • Each ELEMENT belongs to a KINGDOM, either the ____________________________ AND A ___________ with similar characteristics PERIODIC TABLE METALS, METALLOIDS, OR NONMETALS GROUP
Physical & Chemical – 3 min/1min • Each element or group of elements has its very own set of physical and chemical properties (characteristics) • What are all 8 physical properties? • What are all 4 chemical properties? • These properties can lead to physical and chemical changes…ONE of those changes is chemical BONDING!
Bonding Basics – 2 min/1min • Ionic Bonds – 2 facts & 1 example • Metal & Nonmetal (2 ions) • Transfer electrons • Examples: NaCl (salt) • Covalent Bonds – 2 facts & 1 example • 2 Nonmetals • Share electrons • Example: H2O (water)
MOST ELEMENTS WANT TO COMBINE NATURALLY, BUT WHAT FORMS WHEN THEY DO?
When 2 or more substances combine, 3 things can happen: • Compound • Mixture • Solution What’s the difference?
Compounds, Mixtures, Solutions • Read the “Compounds, Mixtures, and Solutions article, and use it to answer the questions. • You may read & complete the questions with your group. • Working effectively as a GROUP = bonus tokens
Quick Comprehension Stations • Visit each station and describe what you see using as many vocabulary terms from the article as you can…I want scientific explanations – (that means use vocabulary!!) • Each station has multiple explanations…token time!!
Homework: • Part 1: Have your parent log on to Power School and check your grade. THEN, have them sign in your agenda that they have checked your grade. • Part 2: Elements, Compounds & Mixtures Identification Worksheet
WARM - UP • Update your Table of Contents • Write your homework – leave it to be stamped • Get your homework out to be checked – tape the worksheet into page 22! • On page 21 divide your page into 4 squares – label them Element, Compound, Mixture, Solution
4-Square (page 21) Element Compound Mixture Solution
Elements: • MUST be on the Periodic Table OF ELEMENTS • Pure substances made of only one type of atom • Combine to form all other types of matter • Examples: • Silver • Calcium • Oxygen
What Does it Look Like Chemically? • Single atoms of ONE pure element • Molecules of ONE pure element
Compounds: • Two or more elements combine during a chemical reaction • Must be combined in specific ratios • Chemical Change/Reaction • Examples: • Water • Salt • Sugar
What Does it Look Like Chemically? • 2 or more ELEMENTS that are CHEMICALLY bonded to one another
Compounds are formed or separated through chemical reactions… What is evidence that a chemical reaction is happening again?
Mixture • Combines 2 or more substances without producing a chemical reaction • NOT the same throughout - heterogeneous • Basic mixtures can be separated easily • Examples: • Soil • Fruit salad • Physical Change
What Does it Look Like Chemically? • 2 or more SUBSTANCES MIXED together, but NOT chemically bonded.
Suspension: • A type of HETEROGENEOUS MIXTURE – different throughout • Particles will not dissolve, (insoluble) or are suspended • Examples: • Italian dressing • Snow globe
Solution: • A type of HOMOGENOUS MIXTURE - same throughout • Can be solids, liquids or gases • Solute- substance being dissolved • Solvent- substance doing the dissolving • Examples: • Salt water • Lemonade • Physical Change Salt = Solute Water= Solvent Salt Water= Solution
What Does it Look Like Chemically? • It is also a mixture of 2 or more SUBSTANCES, but the particles will be evenly distributed throughout (homogenous)
Colloid: • A type of HOMOGENEOUS SOLUTION • Have an “in between” texture • Examples: • Jell-O • Pudding
Take a look at the homework…make corrections if they are wrong!
In it to WIN it! • I will show you a picture and your team will have 15 seconds to figure out what it is and write it down on your white board…YOU GET ONE CHANCE! • Your answer will be one of the following: • Element • Compound • Mixture • Solution • Your team will get a token in your cup for each picture you get correct! • Goal: For your team to collect as many tokens in your cup as possible to win the candy!
Element, Compound, Mixture or Solution? • Cool Whip
Element, Compound, Mixture or Solution? • Methane – CH4
Element, Compound, Mixture, or Solution? • Lemonade
Element, Compound, Mixture or Solution? • Sugar =
Element, Compound, Mixture, or Solution? • Gasoline
Element, Compound, Mixture, or Solution? • Neon Gas in the Sign
Element, Compound, Mixture or Solution? • Pebbles
Element, Compound, Mixture, or Solution? • Kool-Aid
Element, Compound, Mixture, or Solution? • Hydrogen Peroxide
Element, Compound, Mixture, or Solution? • Lucky Charms Cereal
THE LAST CHALLENGE! • Diamond
