Notes Tennessee SPI Objective: Classify common substances as elements or compounds based on their symbols or formulas Science Essential Learning Students.

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Notes Tennessee SPI Objective: Classify common substances as elements or compounds based on their symbols or formulas Science Essential Learning Students will classify substances as elements or compounds per their chemical symbols or chemical formulas. Essential Question(s) How do I interpret chemical symbols and chemical formulas to classify substances as elements or compounds? SPI Elements and Compounds Instructions 1) First click on "View" from the top-menu bar. 2) Then click on "Slide Show" from the drop-down menu. 3) Then use the right-arrow button on your keyboard to advance through this presentation.

Notes SPI Elements and Compounds What Is An Element?  Each individual element is a unique particle called an atom  So in other words… elements are the different types of atoms  An element is a pure substance that CANNOT be broken down into a simpler substance by CHEMICAL means.  In other words…you CANNOT change one element into a different element with a chemical reaction Example Lithium is an element. Here is one lithium atom. 3 Li Lithium 6.9 Science

Examples of Elements Notes SPI Elements and Compounds Science H Na Ca -represents one sodium atom -represents one hydrogen atom -represents one calcium atom The element hydrogen The element sodium The element calcium More About Elements  The chemical symbols for elements always start with one capital letter  These chemical symbols can be followed by one (or more) lower case letters Ex: B, C, N, O, F, etc Ex: He, Li, Be, Mg, etc

Sodium and Chlorine Carbon and Oxygen Carbon, Hydrogen, & Oxygen Notes SPI Elements and Compounds Science NaCl CO 2 C 6 H 12 O 6 (Sodium Chloride (Carbon Dioxide) (Glucose) What Is a Compound? …… consists of two or more different elements that are chemically bonded via a chemical reaction to form a new substance.  The properties of the new substance are different from the substances that you started with. Examples of Compounds

…note that it has more than 1 capital letter Notes SPI Elements and Compounds Science Examples of Compounds H2O H2O C 12 H 22 O 11 CH 3 COOH  Chemical formulas for compounds always contain more than one capital letter. This is the compound called water This is the acidic compound called vinegar This the compound called table sugar  This is how you can tell the difference between an element and a compound… count the number of capital letters! More About Compounds

Is this an element or a compound? Write a capital E if you think it is an element Write a capital C if you think it is a compound Cs (Cesium) Why?...is a pure substance, consists of only one type of atom How to tell?...It only has one capital letter! Element Review Activity SPI Elements and Compounds Science F.Y.I. Used to regulate the seconds in atomic clocks F.Y.I. Used for creating electricity from light in photoelectric cells/solar panels

Is this an element or a compound? Write a capital E if you think it is an element Write a capital C if you think it is a compound NaCl (Sodium Chloride) Why?... Has 2 different types of atoms bonded together How to tell?...It has more than one capital letter! Compound Review Activity SPI Elements and Compounds Science F.Y.I. This is the substance that you sprinkle on your French Fries F.Y.I. This compound is commonly called TABLE SALT

Is this an element or a compound? Write a capital E if you think it is an element Write a capital C if you think it is a compound Fe (Iron) Why?...is a pure substance, consists of only one type of atom How to tell?...It only has one capital letter! Element Review Activity SPI Elements and Compounds Science F.Y.I years ago: tools and weapons were first made out of iron. F.Y.I years ago: people mixed iron & carbon to create steel.

Is this an element or a compound? Write a capital E if you think it is an element Write a capital C if you think it is a compound MgCl 2 (Magnesium Chloride) Why?... has 2 different types of atoms bonded together How to tell?...It has more than one capital letter! Compound Review Activity SPI Elements and Compounds Science F.Y.I. Used for dust control on dirt roads and to reduce wind erosion of soil. F.Y.I. Use for de-icing roads, sidewalks, driveways and parking lots.

Here is an example of a question you might see on a quiz or test. Questions Science Sample Question SPI Elements and Compounds

Here is an example of a question you might see on a quiz or test. Questions Science Sample Question SPI Elements and Compounds

Here is an example of a question you might see on a quiz or test. Questions Science Sample Question SPI Elements and Compounds

Here is an example of a question you might see on a quiz or test. Questions Science Sample Question SPI Elements and Compounds

Here is an example of a question you might see on a quiz or test. Questions Science Sample Question SPI Elements and Compounds