Elements and Compounds

Question	Answer
Element	A simple substance that cannot be split into anything simpler by chemical reactions.
Atoms	The smallest particles of an element. Atoms of one element are all the same, and are different from atoms of all the other elements.
each element has a....... ......	chemical symbol
Chemical Symbol	Is usually one or two letters. It is written with the first letter as a capital, and the second lower case.
chemical symbol of oxygen	O
Chemical symbol of carbon	C
Chemical symbol for iron	Fe
Chemical symbol for alluminum	Al
when elements join together they make	compounds
compounds made form two elements always have a name that ends with...	ide
carbon,oxygen	carbon oxide
sodium,chlorine	sodium chloride
magnesium,oxygen	magnesium oxide
Chemical formula	tells you the name and number of atoms in a compound
the smallest particle of many compounds is called a ........	molecule
molecules	are made up of groups of atoms.Some elements are also molecules.
A molecule of oxygen	O 2
molecule of water	H O 2
METALS properties	-good conductors of heat and electricity -shiny -solids with a high melting point -left side of the periodic table -three metals are magnetic -flexible
NON METALS properties	-poor conductors of heat and electricity -dull -solids or gases -right hand side of the periodic table -brittle
all materials are made up of	90 elements
raw materials are	non-renewable
a process that uses recycled or renewable materials is	substainable

Resource summary

	Created by Billie P about 6 years ago