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Chemistry
Chemistry Vocabulary
Question | Answer |
---|---|
What is a mixture in which two or more substances are uniformly spread out? | Homogenous |
What are two or more types of atoms that are bonded? | Compound |
What is only one type of atom? ( simplest form) | Element |
Name a pure substance made of Hydrogen and Oxygen. | H20 or water |
What is a substance that is only made of one element OR elements that are bonded? | Pure substance |
Second most reactive family/group of metals | Alkaline Earth |
Non-reactive gases with 8 valence electrons | noble gases |
Elements along the zig-zag line or staircase. | metalloids |
Number of rows or periods on the periodic table | 7 |
Number of groups or families on the periodic table | 18 |
Only metal that is a liquid at room temperature | Mercury |
Numbers on the periodic table that show the average of the protons and neutrons | atomic mass |
Number on the periodic table that shows the number of protons and electrons in a neutral atom. | atomic number |
Number that is sometimes on the periodic table that tells if an atom is usually neutral or not | oxidation number |
Capital letter that appears in squares on the periodic table | Symbol |
Most reactive Alkali Metal | Francium |
Most reactive Halogen | Flourine |
When an atom has a different mass ( number of neutrons), what is it called? | Isotope |
When an atom loses or gains an electron and is no longer neutrally charges, what it is called? | ion |
State of matter most commonly found on the periodic table | solids |