Work Sheet #1 Definitions Flashcards
Matter
Anything the occupies space and has mass
Mass
Is the amount of matter in any object, which doesn’t change
Weight
the force of gravity acting on matter, does change
Atom
the smallest units of matter that participate in chemical reactions
Element
Molecule
2 or more atoms joined together
Chemical Symbol
1 or 2 letters of the elements name in English latin or another language
Ion
is a particle that has a positive or negative charge because it has unequal numbers or protons and electrons.
Electron
negatively charged ion
Chemistry
the science of the structure and interactions of matter
Free Radical
has an unpaired electron in its outermost electron shell
Cation
Positively charged ion
Anion
Negatively charged ion
Chemical Bond
The force that hold together the atoms of a molecule or a compound
Metabolism
Is the sum of all chemical processes that occur in the body
Catalyst
chemical compounds that speed up chemical reactions by lowering the activation energy needed for a reaction to occur
Solvent
dissolves other substances
Anabolism
A raising up, the building up of a complex chemical substance from smaller simpler components
Catabolism
Throwing Down, the breakdown of complex chemical substance from smaller simpler components
Solution
a mix of a solvent and solute
Solute
component of a solution that is dissolved.
Salt
when dissolved in water, dissociates into cations and anions, neither of which is H+ or OH-
Acid
is a substance that dissociates into one or more hydrogen ions and one or more anions
Base
removes H+ from a solution and therefore is a proton acceptor