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Science Vocab Smstr1
| Question | Answer |
|---|---|
| Atom | An atom is the basic unit of a chemical element. |
| Element | An element is a substance that cannot be broken down by chemical means. |
| Periodic Table | The Periodic Table is a table of the chemical elements arranged in order of atomic number, usually in rows, so that elements with similar atomic structure appear in vertical columns |
| Periods | Periods are the horizontal rows of the periodic table. An elements period number determines its amount of electron shells. |
| Groups | Groups are the vertical columns of the periodic table. Elements in the same group share several chemical properties, and have the same amount of valence electrons. |
| Protons | A proton is a stable subatomic particle occurring in all atomic nuclei, with positive electric charge. Number of protons = number of electrons. |
| Neutrons | A neutron is a subatomic particle contained in the atomic nucleus. No electrical charge |
| Electron | An electron is a stable subatomic particle with a negative charge. Number of protons = number of electrons. |
| Atomic Number | An element's atomic number is determined by the number of protons in the nucleus of an atom and its place in the periodic table. |
| Atomic Mass | Atomic mass is equivalent to the number of protons and neutrons in the atom's nucleus. |
| Newton's First Law | "An object at rest stays at rest and an object in motion remains in motion unless acted upon by an unbalanced force. |
| Newton's Second Law | "The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object." |
| Newton's Third Law | "For every action, there is an equal and opposite reaction." |
| Flask | A narrow-necked glass container, typically conical or spherical, used in a lab to hold samples or reagents. |
| Beaker | A lipped cylindrical glass container for lab use. |
| Graduated Cylinder | a measuring instrument for measuring fluid volume |
| Triple Beam Balance | A device used for determining the mass of an object. |
| Thermometer | A device used to measure temperature, |
| Balanced Forces | When two equal and opposite forces are applied on an object, and the object doesn't move |
| Unbalanced Forces | When unequal and opposite forces are applied on an object, and the object moves in the direction the greater force is applied. |
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p0403472
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