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Focus Question: What are the 
most common elements? 
Elements and Atoms 4-3 
Mixtures and Solutions
Review Metals 
• There are more metals than nonmetals on 
Earth. 
• Does the food we eat and the other home 
products we use have metals in them? 
• What are the most common elements in 
the things we buy? 
• How many different elements are in the 
things we buy?
The Element Search 
• Many consumer products have lists of 
ingredients 
• Ingredient names often suggest the 
elements that are in the ingredient 
• Sodium chloride - Sodium & Chlorine 
• Common ingredient - Sugar 
• Chemical formula - C6H12O6 
• Carbon, Hydrogen, Oxygen
Elements in Products 
• Search product packages for listings of 
elements or ingredients you know 
include certain elements. 
• Record your findings on notebook 
sheet 
• List product name in the first column 
• Write the chemical symbol for each 
element present in the second column 
• Analyze at least 10 products
Analysis 
• Complete Part 2 of worksheet 
• Tally elements on scratch paper 
• Write symbol for first element in product #1 
• Put a tally mark next to it 
• Repeat for each element in product #1 
• Product #2, 3… - if element is new, add to bottom of list 
and put tally mark next to it. If element is the same as 
one already on the list, add a tally mark next to the 
element symbol 
• Put a code next to the metal elements
Analysis Results 
• Which products produced the greatest 
number of identifiable elements? 
• What was the largest number of elements 
listed? 
• What was the largest number of metals 
listed? 
• Where did all the elements in the products 
come from? 
• What elements do you think are most 
abundant in the Earth? In the Earth’s crust? 
• What elements do you think are the most 
abundant in you?
Homework, Etc… 
• Read Earth Elements, pg 59-63 + Qs 
• New Technologies, pg 64-67 + Qs 
• Ask a Chemist, pg 68-71 (no Qs) 
• Summary: Elements, pg 72-74 + Qs 
• I-check 4 on Friday, 11/21 
• Unit test on Wednesday, 12/1

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Mixtures and solutions 4-3

  • 1. Focus Question: What are the most common elements? Elements and Atoms 4-3 Mixtures and Solutions
  • 2. Review Metals • There are more metals than nonmetals on Earth. • Does the food we eat and the other home products we use have metals in them? • What are the most common elements in the things we buy? • How many different elements are in the things we buy?
  • 3. The Element Search • Many consumer products have lists of ingredients • Ingredient names often suggest the elements that are in the ingredient • Sodium chloride - Sodium & Chlorine • Common ingredient - Sugar • Chemical formula - C6H12O6 • Carbon, Hydrogen, Oxygen
  • 4. Elements in Products • Search product packages for listings of elements or ingredients you know include certain elements. • Record your findings on notebook sheet • List product name in the first column • Write the chemical symbol for each element present in the second column • Analyze at least 10 products
  • 5. Analysis • Complete Part 2 of worksheet • Tally elements on scratch paper • Write symbol for first element in product #1 • Put a tally mark next to it • Repeat for each element in product #1 • Product #2, 3… - if element is new, add to bottom of list and put tally mark next to it. If element is the same as one already on the list, add a tally mark next to the element symbol • Put a code next to the metal elements
  • 6. Analysis Results • Which products produced the greatest number of identifiable elements? • What was the largest number of elements listed? • What was the largest number of metals listed? • Where did all the elements in the products come from? • What elements do you think are most abundant in the Earth? In the Earth’s crust? • What elements do you think are the most abundant in you?
  • 7. Homework, Etc… • Read Earth Elements, pg 59-63 + Qs • New Technologies, pg 64-67 + Qs • Ask a Chemist, pg 68-71 (no Qs) • Summary: Elements, pg 72-74 + Qs • I-check 4 on Friday, 11/21 • Unit test on Wednesday, 12/1