1、Elements and Compounds(元素與化合物)Relative (相對) abundance (豐度) of different elementsDifferences between compound (化合物) and mixture (混合物)Some definitions (定義)nElement (元素) e.g. hydrogen, oxygen A pure subs
Elements,compoundsandmixtures WHATISANELEMENT?Anelementis…•materialmadeofjustonetypeofatom •Asubstancethatcannotbeseparatedorbrokendownintosimplersubstancesbychemicalmeans Whatarethe3mostabundantelementsthatmakeuptheearth?•Oxygen•Iron•silicon answer Compositionoftheearth Whatare3mostcommonelementsthat...
Examples of Mixtures chicken noodle soup pizza – yes, that would be Yoda… salad Properties of Mixtures: •Each substance in a mixture keeps its identity •You can physically separate them •They also contain elements, compounds, or both •And they can be formed using any ...
ElementsAn element is the simplest form of matter that has a unique set of properties. Examples of well-known elements include oxygen, iron, and gold (see the figure below). Elements cannot be broken down into a simpler substance. Likewise, one element cannot be chemically converted into a ...
In this lesson, learn what compounds and elements are, and see examples of each. Also, learn how atoms in a compound are held together.
Monatomic ElementsMonatomic elements are elements that exist as individual atoms. Elements in Group 0 of the Periodic Table are known as noble gases and they are made up of single atoms.Examples:MoleculesA molecule is a group of two or more atoms that are chemically combined together....
and C6H12O6are some examples of common compounds. Therefore, compounds are a subset of molecules. The elements in a compound are joined together by covalent bonds, ionic bonds, metallic bonds, etc. The structure of the compound gives the number of atoms in the compound and their ratios. In ...
• Examples: Gasoline, Soda Pure substance and mixtures • Comparison: both are composed of elements • Contrast: Pure substance is composed of an element or compound whose composition is fixed. Mixture is composed of a combination of pure substances whose composition can vary WHAT...
Learn about elements, compounds, and molecules, and the difference between molecules and compounds. Understand how elements and the number of atoms...
Elements, compounds and mixtures元素,化合物和混合物.ppt,Homogeneous Mixture Mixtures that mix very well Solutions where substances dissolve well into each other Can not visually see any separation of the ingredients Examples: Gasoline, Soda Pure substan