Elements Compounds & Mixtures
By: Jane Sundell
Pure Substance: A substance where there is only one type of particle
Element-a substance that connote be separated or broken down into simpler substances by chemical means
Characteristics of Elements: boiling point, melting point and density
How can Elements be Identified?
- Elements can be identified by their characteristics
- Metals: Lead, Tin, Copper
- Nonmetals: Iodine, Sulfur, Neon
- Metalloids: Boron, Silicon, Antimony
How do Elements make up Compounds:
- a compound is a pure substance composed by two or more elements that are chemically combined
Compound-a substance made up of atoms of two or more different elements joined by chemical bonds
properties of compounds: melting point, density and color reactions to certain things
How can a compound be broken down into its elements:
By chemical changes
Examples of common compounds:
Aluminum, carbon dioxide, ammonia, nitrogen
Mixture-a combination of two or more substances that are not cheically combined
How can a mixture be broken down into different substances?
You have to have two or more substances that will not have a chemical reaction when you put them together to have a mixture. The picture above is a perfect example.The pineapple, mushrooms, ham, cheese, and pizza crust are all substances. When you put your pizza together your ham doesn't turn into sausage and your cheese doesn't turn into turkey nothing changes when you put all of these substances together. You can even take the pizza back apart and everything and it will be just as it was. Therefore pizza is a mixture.