Download presentation
Presentation is loading. Please wait.
Published byDerek Flynn Modified over 9 years ago
1
Chemical Symbols 10/15/2012 S: Define in your own words what an element is and what an element is not.
2
P: Video on the Periodic Table
3
Properly write a chemical symbol All elements in the Periodic Table have symbols that are recognized world wide. It does not matter which country you are in or the language you speak. Example: The element Iron is always identified by “Fe” and Oxygen is “O”. The names are not always the same but the symbols are. “Fe” is iron in Canada, fer in France and fier in Romania. A:
4
Chemical Symbols A Chemical symbol is an abbreviation of a name of an element. Element Chemical Symbol Oxygen Nitrogen Hydrogen Sodium O N H Na
5
Elements 3 Naming Rules Rule 1: PRINT all symbols. Rule 2: If there is only one letter, that letter is always a capital. Example: H for hydrogen Rule 3: If there are two letters, the first letter is a capital and the second is lower case. Example: He for helium
6
Worksheet Use the periodic table in your textbook to complete the worksheet.
7
Why do you think scientists use symbols instead of element names? C:
8
Create a symbol for your own element. Write the name of the element and tell one special characteristic of it. E: Jm Judsonium It bonds students together in hallways.
9
Identify the Correct or Incorrect chemical symbols CA Ca CA cA M&M Lab: Elements and Compounds 10/16/2012 S:
10
Elements Correct CA Ca CA cA
11
To understand that elements can be represented by chemical symbols; to understand that compounds can be represented by chemical formulas; and to understand that the ratio of elements in a compound are demonstrated in its chemical formula. Purpose of Today’s Lab:
12
P: Copy in Journal Hypothesis: I think there will be ___ red M&Ms, ___ Orange M&Ms, ___ Yellow M&Ms, ___ Green M&Ms, ___ Blue M&Ms, and ___ Brown M&Ms in my bag of elements.
13
A:Draw the chart below in journal M & Ms ColorSymbol Total # of Atoms in the Bag # of Atoms RedR 2 OrangeOr YellowY 1 BlueBl 3 GreenG 1 BrownBn 4 Chemical Formula R 2 Bl 3 GYBn 4
14
You have been given a mystery bag of mixed “elements”. Each M&M represents an atom of an element, and each color represents a different type of element, with its own symbol, given in the chart below. Before opening your bag of elements, hypothesize about how many of each type of element you have been given. Taking turns, you and your partner will build 7 different compounds for each other. Record the number of atoms of each element used in the compound in the chart, and then write the formula for the compound in the space provided. You may reuse the elements as needed to make the different compounds. Directions:
15
C: Draw two of the compounds you created. Use color. Create a color key to identify the elements in your drawing. Name your compounds. E: Conclusion: Using complete sentences and in your own words, write 3 rules that must be followed when writing chemical formulas and symbols.
16
10/17/2012 S :Write the chemical symbol for the following elements: SulfurOxygen HeliumHydrogen NitrogenSodium
17
P: Edusmart Compounds
18
A: Element or Compound 1) Cl 2) H 3) He 4) Na 5) S 6) H 2 O 7) NaCl 8) KI
19
C: List as many compounds as you can….
20
E: Describe the difference between an element and a compound.
21
10/18/2012 S: Identify the color of the liquid based upon density. Densities of liquids: Light corn syrup = 1.33 g/mL Water = 1.00 g/mL Dish soap = 1.04 g/mL Isopropol alcohol = 0.85 g/mL
22
P: A Pure Substances is… A sample of matter that has definite chemical and physical properties.
23
Elements: pure substance that cannot be separated into simpler substance by physical or chemical means.
24
Compounds Pure substance composed of two or more different elements joined by chemical bonds. Made of elements in a specific ratio that is always the same Has a chemical formula Can only be separated by chemical means, not physically
25
Mixtures A combination of two or more pure substances that are not chemically combined. substances held together by physical forces, not chemical No chemical change takes place Each item retains its properties in the mixture They can be separated physically Chem4kids.com
26
Mixtures vs. Compounds http://www.bbc.co.uk/schools/ks3bitesize/science/chemistry/elements_com_mix_6.shtml
27
A: Can you identify the following? An element contains just one type of atom. A compound contains two or more different atoms joined together. A mixture contains two or more different substances that are only physically joined together, not chemically. A mixture can contain both elements and compounds.
28
Element, Compound, or Mixture? Rocks
29
Element, Compound, or Mixture? Rocks
30
Element, Compound, or Mixture? Copper
31
Element, Compound, or Mixture? Copper
32
Element, Compound, or Mixture? Jelly Beans
33
Element, Compound, or Mixture? Jelly Beans
34
Element, Compound, or Mixture? Table Sugar
35
Element, Compound, or Mixture? Table Sugar
36
Element, Compound, or Mixture? Diamond
37
Element, Compound, or Mixture? Diamond
38
Element, Compound, or Mixture? Tea
39
Element, Compound, or Mixture? Tea
40
Element, Compound, or Mixture? Salt
41
Element, Compound, or Mixture? Salt
42
Element, Compound, or Mixture? Neon Gas
43
Element, Compound, or Mixture? Neon Gas
44
Element, Compound, or Mixture? Salad
45
Element, Compound, or Mixture? Salad
46
Element, Compound, or Mixture? Pure Water
47
Element, Compound, or Mixture? Pure Water
48
Element, Compound, or Mixture? Aluminum
49
Element, Compound, or Mixture? Aluminum
50
Element, Compound, or Mixture? Lemonade
51
Element, Compound, or Mixture? Lemonade
52
Element, Compound, or Mixture? Silver
53
Element, Compound, or Mixture? Silver
54
Element, Compound, or Mixture? Sand
55
Element, Compound, or Mixture? Sand
57
E: What are some of the limitations of this model of elements and compounds? A A A AB AB AB
58
10/19/2012 S : Determine the volume: Determine the density if the mass is 3.2 g.
59
P: Reading Charts and Graphs Venn Diagram 1.Which eat bugs? 2.Which have 4 legs? 3.Which are mammals? 4.Which have scales?
60
1.Which genre of movie is most popular? 2.What percentage of people prefer either romance or action? FAVORITE MOVIE GENRE
61
A: Reading Charts and Graphs Use the class set of READING GRAPHS to gather and record data in your science journal.
62
C: What is the price difference between the candy bar purchased at a pro sports event and a grocery store?
63
E: Describe what information consumers should use when making decisions about the products they buy.
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.