Download presentation
Presentation is loading. Please wait.
1
Elements and Compounds
Notes SPI Elements and Compounds Science Learning Intention: Classify common substances as elements or compounds. Purpose: to understand how elements bond together to form compound molecules. Success Criteria I will show that I understand this topic by earning a 90 or higher on the quiz. I Can Statement By the end of this unit I will be able to say... ...I can classify substances as an element or a compound.
2
Elements and Compounds
SPI 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. You CANNOT change one element into a different element during a chemical reaction. 3 Li Lithium 6.9 Example Lithium is an element. Here is a lithium atom.
3
Elements and Compounds
SPI 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 hydrogen -represents one hydrogen atom Na sodium -represents one sodium atom Ca calcium -represents one calcium atom
4
Carbon, Hydrogen, & Oxygen
What is a Compound? Compound molecules are formed during chemical reactions two or more DIFFERENT elements that are chemically bonded via a chemical reaction to form a new substance. The properties of the new substance (product) are different from the substances (reactants) that you started with. Examples of Compounds NaCl (Sodium Chloride) Sodium and Chlorine CO2 (Carbon Dioxide) Carbon and Oxygen C6H12O6 (Glucose) Carbon, Hydrogen, & Oxygen
5
Elements and Compounds
SPI 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
6
Cs (Cesium) Element Science F.Y.I. F.Y.I. Review Activity
SPI 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 solar panels. Element
7
NaCl (Sodium Chloride) Compound Science F.Y.I. F.Y.I. Review Activity
SPI 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
8
Fe (Iron) Element Science F.Y.I. F.Y.I. Review Activity
SPI 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
9
MgCl2 (Magnesium Chloride) Compound Science F.Y.I. F.Y.I. Review
Activity SPI 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
10
Elements always have only one capital letter.
Science Question SPI Elements always have only one capital letter. Compounds always have more than one capital letter. Identity them by counting the number of capital letters! Key Word
11
Elements always have only one capital letter.
Science Question SPI Elements always have only one capital letter. Compounds always have more than one capital letter. Identity them by counting the number of capital letters!
12
Elements always have only one capital letter.
Science Question SPI Elements always have only one capital letter. Compounds always have more than one capital letter. Identity them by counting the number of capital letters!
13
Each individual element is a unique particle called an atom.
Science Question SPI Each individual element is a unique particle called an atom. Compounds contain two or more elements bonded together.
14
Compounds always have more than one capital letter.
Science Question SPI Compounds always have more than one capital letter. Compounds are formed during chemical reactions, and the properties of the product(s) are different from the reactants.
Similar presentations
