Element, Compound, Mixture
Alyssa Slayden
Element Definition
1) Helium
Compound Definition
1) H2O= Water
When An Element Forms A Compound...
It loses its properties as it is being combined with another element to form a substance.
It has a completely different set of physical and chemical properties than the elements that formed it.
Since it is being separated back to the origional elements those elements will keep their own unique attributes.
How Are Compounds Formed and Separated?
Compounds can be formed from chemical reactions.
Compounds can be seperated by breaking the bonds between atoms.
Elements on the other hand can not be separated, they are already as simple as you can get.
Contrasting Elements and Compounds
Similarities: 1. At the lowest levels elements and compounds are both composed of atoms; 2. Compounds and elements are both pure substances that cannot be separated by physical means; and 3. Elements and compounds are homogeneous in that they have the same composition ratio of elements throughout the sample.
Differences: Elements are the simplest forms of matter- Compounds are substances that can be separated into simpler substances
Chemical Formulas Definition
Chemical Formula- Is a way of expressing information about the atoms that make up a particular chemical compound.
H2+O---> H2O
Na+Cl---> NaCl
Subscripts and Co-Efficients
Co-Efficient: A numerical constant that is a measure of a property of a substance.
Subscripts: A character that is printed on a level lower than the rest of the characters on the line
Examples: C.E. ---> 2H2(<Subscript)O