Atoms, Elements & Molecules
A pure substance made up of only one type of atom is a/an
element
pH stands for:
Potential for Hydrogen Ions
The Russian chemist and teacher who organized the known elements of the time into the periodic table.
Dmitri Mendeleev
95% of what we think is taste, is actually this.
Smell
True or False: The solvent is the liquid, and the solute is the minor component dissolved to make a solution
True
A pure substance made from more than one type of atom is called a/an
compound
The process of adding carbon dioxide to a liquid is called:
carbonation
The Polish-born physicist and chemist who discovered two new elements (polonium & radium).
Marie Curie
Name the five basic tastes.
Bitter, Umami, Sour, Salty, Sweet
Polar molecules that are attracted to water are called:
Hyrdophilic
What are the 3 subatomic particles?
Protons, neutrons and electrons
Acid or Base? A substance that produces Hydrogen ions when it is added to water is a/an:
Acid
British chemist who came up with the first scientific eperiments to show that matter is made of tiny particles called atoms.
John Dalton
"Umami" is Japanese for this word.
Savory
When a protein that looks like a ball of yarn is mechanically unravelled through whisking is the process called:
denaturation
A combination of elements, compounds or both, that is not pure, is called a/an:
mixture
Acid or Base? A substance that accepts Hydrogen ions when it is added to water is a/an:
Base
Scientist who discovered that atoms have electrons, and called his atomic model the Plum Pudding Model.
J.J. Thompson
Umami is the taste of this molecule.
Glutamate
Ice absorbs energy as it melts, but _____ water does not release energy by freezing and therefore lowers the freezing point of water.
Salt
compound
The highest number on the pH scale
14
Scientist who discovered the Nuclear Model of the atom.
Ernest Rutherford
The sensory regions of the tongue are called this.
Papillae (contain your taste buds)
A molecule that contains both a hydrophobic and a hydrophilic region to help attract polar and non-polar molecules together is called an:
emulsifier