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Chemistry
Chemistry, 40 words.
Question | Answer |
---|---|
Atom | A unit of matter or the smallest unit of a chemical element |
Atomic Mass | Number of protons and neutrons in the atom |
Atomic Number | The number of protons in the nucleus of an atom |
Bohr Diagram | shows protons and electrons as they move in a circular orbit similar to the solar system |
Chemical Symbol | A code for a chemical element |
Electron | primary carrier of electricity in solids and is a negative charge |
Energy Level | the amount of energy it has/ the rings |
Family | another word for group |
Isotope | same element that contains equal numbers of protons but different numbers of neutrons |
Leptons | subatomic particle such as an electron |
Lewis Structure | electron dot diagrams |
Metal | solid that is good electrical and thermal conductivity |
Metalloid | an element whose properties are intermediate between those of metals and solid nonmetals |
Neutron | neutral charge with about the same mass as a proton |
Nonmetal | element that is not a metal |
Nucleus | central positively charged core of an atom |
Periodic Table | a table of the chemical elements arranged in order of atomic number |
Proton | positive electric charge |
Quark | carries a fractional electric charge |
Valence | electrons on last ring of of the energy level |
Period | a name for different groups; period 1, period 2, period 3 |
Compound | composed of two or more separate elements |
Mixture | substance made by mixing other substances together |
Matter | occupies space and has has mass |
Chemical Property | behavior of a substance when it undergoes a chemical change |
Chemical Change | a new chemical substance |
Physical Property | color, texture, freezing point, boiling point. |
Physical Change | a substance physically changes without the substances changing |
Monomer | bonds with other identical molecules to form a polymer |
Polymer | molecular structure consisting of large number of similar units bonded together |
Petrochemicals | a chemical obtained from petroleum and natural gas. |
Ion | atom or molecule that has lost or gained one or more electrons |
Ionic Bond | happens when an charged atom gains or loses its electrons |
Covalent Bond | a chemical bond that involves the sharing of electron pairs between atoms |
Oxidation Number | represents the number of electrons lost(or gained if the number |
Chemical Formula | shows total number of atoms in a molecule |
Chemical Equation | Shown by arrows and other symbols |
Reactants | a substance that undergoes change during a reaction |
Products | a substance obtained from another substance through chemical change |
Law of Conservation of Mass | law in which matter can not be created or destroyed |