click below
click below
Normal Size Small Size show me how
Chemistry II
Chemistry Review II
Term | Definition |
---|---|
Catalyst | The energy or substance needed to start a chemical reaction |
Reactants | The substances on the left side of a chemical equation |
Nucleus | The part of the atom that gives it its mass |
Ductile | Metals can be drawn into thin wires because they are ______ |
Metals | Elements to the left of the zigzag line on the Periodic table |
Noble Gasses | Elements in family 18 are called ______ |
Hydrogen | there are 2 atoms of ____ in a molecule of water |
Compound | Two or more different elements chemically bonded |
Malleable | Metals can be hammered into thin sheets because they are ___ |
Positive | A nucleus has this type of charge |
Yields | The arrow in a chemical equation |
Water | A surprising byproduct of a burning candle |
Molecule | 2 or more atoms chemically bonded |
Balanced | A chemical equation with the same atoms before and after the reaction |
Homogeneous | A mixture that appears to be just one substance |
Subscript | A # that cannot be changed when balancing chemical equations |
Endothermic | A reaction in which heat energy is drawn in |
Precipitate | A solid that forms out of 2 liquids reacting |
Isotope | Atoms of the same element with different #'s of neutrons |
Family | Elements found in a column on the Periodic table |
Alkali Metals | The family with the most highly active solids |
Proton | What is the positive subatomic part of an atom |
Neutral | What type of charge does a neutron have? |
Matter | A word that refers to all the substance in the universe |
Sodium | A deadly element that is a part of the salt molecule |
Coefficients | The numbers that can be changed to balance a chemical equation |
Valence | The # of electrons on the outer energy shell of an atom |
Chemical Reaction | Something that must happen to form a compound |
Metalloids | Elements that have properties of both metals and non metals |