Chapter11 Flashcards
Compound
Substances made by joining together two or more elements
Example of a compound
Water (hydrogen and oxygen)
Mixture
A material containing two or more elements or compounds that are in close contact and are mixed.
Example of a mixture
Seawater (water and salt)
Summarise Compounds under the following: Composition, Bonded/Not Bonded, Properties, Separation.
Composition: Made up of a single substance. You cannot change the amount of each element in a compound; it stays the same.
Bonded/Not Bonded: Elements are joined by a chemical bond.
Properties: The properties of the compound are different from the properties of the elements it contains.
Separation: Compounds can only be separated into the elements that make it up by using a chemical reaction.
Summarise Mixtures under the following: Composition, Bonded/Not Bonded, Properties, Separation.
Composition: Made up of two or more substances physically combined. You can change the amount of each substance in a mixture.
Bonded/Not Bonded: Substances are not chemically joined together.
Properties: Each substance in a mixture keeps its own properties.
Separation: Each substance in a mixture is easily separated from each other.
Molecules
Groups of two or more atoms bonded together
Pure Substances
Substances that contain only atoms or molecules of that substance.
Solution
Formed when a solute dussolves in a solvent.
Solute
The substance that dissolves to form a solution.
Solvent
The substaces a solute dissolves in to form a solution.
Suspension
When a solid does not dissolve but settles to the bottom of the liquid or floats through the liquid, making it cloudy.
Solubility
The measure of how much solute can dissolve in a fixed volume of solvent to make a saturated solution.
