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Changes of Matter
Review for chemical&physical changes+balancing equation,etc.
Term | Definition |
---|---|
Chemical Changes | A change that creates something new. |
Physical Changes | A change that doesn't create something new and just changes the physical properties. |
Chemical Property | Being able to be changed chemically. Such as being able to be set on fire. |
Synthesis | A chemical reaction that combines elements.i.e P+O2=P4O10 |
Decomposition | A chemical reaction that breaks things apart or separates the elements from each other. i.e HgO=Hg+O2 |
Single Replacement | A chemical reaction that replaces one element with another. i.e Cl2+NaBr=NaCl+Br2 |
Double Replacement | A chemical reaction that replaces 2 elements with the other. i.e CuCl2+H2S=CuS+HCl |
Atom | A single element by itself. |
Molecule | A group of elements chemically bonded. |
Conservation of Mass | Balancing Equations i.e N2+H2=NH3 is unbalanced, 1N2+3H2=2NH3 |
Physical Property | The properties that are observed by the 5 senses |