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Frage | Antworten |
Biology | the study of life |
Metabolism | all the chemical transformations and other work done in a cell or organism |
Scientific Method | a means of gaining knowledge about the natural world by making observations, posing hypotheses, and conducting experiments to test those hypotheses |
Vaccine/Autism Controversy | controversy over whether or not the MMR vaccine causes Autism |
Atom | the smallest unit of a chemical element. Consists of a nucleus and one or more electrons. |
Element | a substance that cannot be converted to simpler substances by ordinary chemical means |
Atomic Number | the number of protons in the nucleus of an atom; also equals the number of electrons around the neutral atom. Determines the chemical properties of the atom |
Molecule | a chemical substance made up of two or more atoms joined by covalent bonds or ionic attractions |
Compound | a substance made up of atoms of more than one element |
Proton | subatomic particle with positive charge |
Neutron | subatomic particle with no charge |
Electron | subatomic particle with negative charge. |
Electronegativity | the tendency of an atom to attract electrons when occurs as a part of the compound |
Polarity | the property of unequal electron sharing between two atoms in a covalent bond |
Ion | an electrically charged particle that forms when an atom gains or loses one or more electrons |
Cation | An ion with a positive charge |
Anion | an ion with a negative charge |
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