Elements and Compounds Tennessee SPI Objective: Essential Question(s) Notes Science Tennessee SPI Objective: Classify common substances as elements or compounds based on their symbols or formulas 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. 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?

Elements and Compounds SPI 0807.9.3 Elements and Compounds Notes Science 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 3 Li Lithium 6.9 Example Lithium is an element. Here is one lithium atom.

Elements and Compounds SPI 0807.9.3 Elements and Compounds Notes Science More About Elements The chemical symbols for elements always start with one capital letter Ex: B, C, N, O, F, etc These chemical symbols can be followed by one (or more) lower case letters Ex: He, Li, Be, Mg, etc Examples of Elements H The element hydrogen -represents one hydrogen atom Na The element sodium -represents one sodium atom Ca The element calcium -represents one calcium atom

Elements and Compounds Carbon, Hydrogen, & Oxygen SPI 0807.9.3 Elements and Compounds Notes Science 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 NaCl (Sodium Chloride Sodium and Chlorine CO2 (Carbon Dioxide) Carbon and Oxygen C6H12O6 (Glucose) Carbon, Hydrogen, & Oxygen

Elements and Compounds SPI 0807.9.3 Elements and Compounds Notes Science More About Compounds Chemical formulas for compounds always contain more than one capital letter. This is how you can tell the difference between an element and a compound… count the number of capital letters! Examples of Compounds …note that it has more than 1 capital letter H2O This is the compound called water …note that it has more than 1 capital letter C12H22O11 This the compound called table sugar …note that it has more than 1 capital letter CH3COOH This is the acidic compound called vinegar

Cs (Cesium) Element Science F.Y.I. F.Y.I. Review Activity SPI 0807.9.3 Elements and Compounds Science 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! 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 Element

NaCl (Sodium Chloride) Compound Science F.Y.I. F.Y.I. Review Activity SPI 0807.9.3 Elements and Compounds Science 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! F.Y.I. This is the substance that you sprinkle on your French Fries F.Y.I. This compound is commonly called TABLE SALT Compound

Fe (Iron) Element Science F.Y.I. F.Y.I. Review Activity SPI 0807.9.3 Elements and Compounds Science 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! F.Y.I. 6000 years ago: tools and weapons were first made out of iron. F.Y.I. 4000 years ago: people mixed iron & carbon to create steel. Element

MgCl2 (Magnesium Chloride) Compound Science F.Y.I. F.Y.I. Review Activity SPI 0807.9.3 Elements and Compounds Science 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 MgCl2 (Magnesium Chloride) Why?... has 2 different types of atoms bonded together How to tell?...It has more than one capital letter! F.Y.I. Use for de-icing roads, sidewalks, driveways and parking lots. F.Y.I. Used for dust control on dirt roads and to reduce wind erosion of soil. Compound

Elements and Compounds SPI 0807.9.3 Elements and Compounds Science Questions Sample Question Here is an example of a question you might see on a quiz or test.

Elements and Compounds SPI 0807.9.3 Elements and Compounds Science Questions Sample Question Here is an example of a question you might see on a quiz or test.

Elements and Compounds SPI 0807.9.3 Elements and Compounds Science Questions Sample Question Here is an example of a question you might see on a quiz or test.

Elements and Compounds SPI 0807.9.3 Elements and Compounds Science Questions Sample Question Here is an example of a question you might see on a quiz or test.

Elements and Compounds SPI 0807.9.3 Elements and Compounds Science Questions Sample Question Here is an example of a question you might see on a quiz or test.