Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
(PS8.1.3/1.5) Vocab
Vocabulary review for chemistry - PS8.1.3/PS8.1.5
| Term | Definition |
|---|---|
| Valence Electron | The number of electrons found in the outer shell. These electrons can be gained, lost, or shared during a chemical reaction. |
| Periodic Table | A chart of the elements showing the repeating pattern of their properties. |
| Atomic Number | The number of protons in the nucleus of an atom. |
| Atomic Mass | The average mass of all the isotopes of an element. |
| Group/Family | Elements in the same vertical column of the periodic table. 18 Columns |
| Period | A horizontal row of elements in the periodic table. 7 Rows |
| Metal | elements with similar properties found on the left side of the “staircase” on the periodic table |
| Metalloid | elements with similar properties that create a “staircase” on the periodic table |
| Nonmetal | elements with similar properties found on the right side of the “staircase” on the periodic table |
| Malleability | A term used to describe a material that can be pounded into shapes. |
| Conductivity | The ability of an object to transfer heat or electricity to another object. |
| Reactive | The ease and speed with which an element combines, or reacts, with other elements and compounds. |
| Ductility | A term used to describe a material that can be pulled out into a long wire. |
| Law of conservation of mass | The amount of matter does not change during a chemical reaction, only that the atoms are rearranged to form new substances. This is evidenced in a balanced chemical equation. |
| Chemical Equation | Uses chemical formulas and other symbols instead of words to summarize a reaction. 2H2 + O2 → 2H2O |
| Closed System | A system in which no matter is allowed to enter or leave. |
| Open System | A system in which matter can enter from or escape to the surroundings. |
| Coefficient | A number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction. 2H2 + O2 → 2H2O |
| Subscript | A specific number of atoms of the element found in each molecule of a substance. 2H2 + O2 → 2H2O |
| Water | H2O |
| Carbon dioxide | CO2 |
| Glucose | C6H12O6 |
| Table salt | NaCl |
| Oxygen | O2 |
| Household bleach | NaClO |
| Hydrochloric acid | HCl |
| Ammonia | NH3 |
| Baking Soda | NaHCO3 |
| Vinegar | HC2H3O2, 5% solution |
Created by:
dsmith23
Popular Science sets