Chemistry - Vocabulary
Terms in this set (...)
The horizontal rows on the periodic table.
The vertical columns on the periodic table.
-Solid at room temperature
Capable of being shaped.
Easy to shape, bend, press down.
Describes a material that can be pulled out into a long wire.
Elements that have properties of both metals and nonmetals.
-Brittle when solid
-Lower melting and boiling points than metals
Signs of a Chemical Reaction
Odor, gas, light, heat, color change, new substance exists
Law of Conservation of Mass
Matter cannot be created nor destroyed; the total mass of products equals the total mass of the reactants.
Number in front of a compound's chemical formula telling you how many molecules of that compound.
Number written after an element in a chemical formula telling you how many atoms there are for each element.
Chemical equation where the total mass of the reactants equals the total mass of the products. Produced by changing the coefficients of the compounds.
Written representation of a chemical reaction/chemical change; shows all the reactants and products. Always in the form of: Reactants arrow Products.
Chemical reaction; when substances interact with each other. Original substances are used up.
When a substance changes its phase (changes to a solid, liquid , gas, or plasma) or is modified (size, shape, etc) but remains the same substance.
A chemical combination of 2 or more different atoms.
A chemical combination of 2 or more atoms.
Substance(s) existing after a chemical reaction takes place. Found to the right of the arrow.
Substances existing before a chemical reaction takes place. Found to the left of the arrow.
the arrow in the middle of the equation
Ch. 9 Chemical Reactions Per.7
Unit 7 Vocab.
Chemistry Practice (APEMAN, Periodic Table, & Counting)