Water will remain pure with its composition of oxygen and hydrogen but put a spoonful of sugar in it and it turns impure. Pure substances are homogenous because all the molecules or atoms that combine to form them have the same chemical and physical properties. This property of having properties indicates that the substance is pure.Įlements and compounds are pure substances, whereas mixtures are not. But breaking a compound would result in the loss of its specific chemical properties. In a way, they both are pure since breaking them down would only result in similar types of sub-particles. If an element comprises one atom, compounds are made up of only one kind of molecule. Whereas the compound, carbon dioxide, has two carbon atoms and one oxygen atom. An element has only one kind of atom, whereas compounds contain different atoms. Elements and compounds are both made up of atoms.
Two or more atoms combine to form molecules. The basic building block of matter is an atom. In a periodic table, the columns represent elements of similar properties and groups. The periodic table lists elements according to their atomic numbers, from the lowest atomic number to the highest. Their difference is that elements comprise one type of atom, whereas a compound comprises different elements. Pure substances may be elements (cannot be separated into simpler substances) and compounds (can be separated into simpler substances and elements).Įlements and compounds are two forms in which natural substances are found. The matter is classified into pure substances and mixtures. Matter is simply anything that occupies space and has mass. Elements, Compounds, Mixtures Teaching ThemeĮlements and Compounds Bulletin Boards and Writing PaperĮvery physical object in the world is made up of matter.Chemistry Web Sites For Science Teachers.Venn Diagram: Comparing Elements and CompoundsĮlements and Compounds Related Teacher Resources.Periodic Table - A full printable version in black and white.Make sure to include all of the words in the word bank. Parts of An Atom - Label the parts of the atom pictured below.Element Symbols Worksheet 1 - Now write the symbol for the names you are given.Element Names Worksheet - Give the name for each of the element symbols below.These worksheets focus on making these concepts concrete for students. Compounds can be broken down into elements. Compounds are substances that composed of two or more elements that are chemically combined. Elements and Compounds Printable WorksheetsĮlements are substances that cannot be broken down into simpler substances by chemical means.
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