Quiz Two Chem Of Life Flashcards
What is an element
A substance that can’t be breaken down any further
What is an atom
The smallest part of an element.
Compound
Pure substance made of two or more chemically combined different elements
Proton
Positively charged part of an atom in the nucleas
Neutron
Neutral parts of an atom located in the nucleas
Electron
Negatively charged in the electron cloud
Isotope
Has a different number of neutrons but same element
Ionic bond
One atom takes an electron (between a metal and non metal)
Covalent bonds
Two atoms share electrons (between two non metals)
Polar
One side is positively charged and one is negative
Adhesion
The property of water to stick to other substances
Cohesion
The property of water to stick to itself
Buffer
Resists changes in pH
Capillary action
Water goes up narrow tubes
Base
Has a pH higher than 7
Acid
Has a pH lower than 7
ph
Level of acidity
Hydrogen bond
Hydrogen bonding to an electronegative atom
Activation energy
The energy needed to fuel a reaction
Active site
The part of an enzyme that attaches to a substrate
Catalyst
Speeds up or slows down a reaction
Product
The result of a chemical reaction
Enzyme
Acts as a catalyst in the human body
Substrate
A protein that needs to be changed by an enzyme
Enzyme substrate complex
The enzyme and substrate connected during the reaction