Matter
Created in 1867 by Dmitri Mendeleev
The Periodic Table of Elements
When one atom takes more electrons for itself.
Ionic Bond
When the reaction happens all by itself.
Spontaneous Reaction.
From Greek meaning "to fear water"
Hydrophobia
Two or more substances that are chemically bonded.
A compound
Protons and neutrons combine to form this.
Nucleus
When electrons are shared between two atoms.
Covalent bond
This type of reaction occurs when one atom kicks another atom out of a molecule.
What is a displacement reaction
From Greek meaning "water loving"
Hydrophilic
In a solution, the substance that something is dissolved into
What is a solvent
The three particles that compose an atom are
protons, neutrons and electrons
An unknown element has 200 protons in its nucleus. How many electrons does it have?
200
The type of reaction that occurs when a molecule breaks apart into two or more molecules
What is decomposition reaction
The PH of pure water
What is 7
Two or more substances that are physically mixed but not chemically bonded
A mixture
An element's atomic number is equal to the number of
The number of protons
An Atom is found to have 34 protons and 30 neutrons in its nucleus. What is its amu?
approximately 64
Describe what happens in a neutralization reaction.
When an acid and a base combine to neutralize each other
Two items that can be used to measure the PH of a substance
pH paper, litmus paper, pH meter
A type of colloid where a liquid (protein) is mixed into a liquid(water).
What is an emulsion
The formula used to calculate the number of moles in an item if you know how much it weighs.
Moles=weight in grams/ atomic mass in amu
If your helium balloon weighs 8grams (not including the balloon) how many moles of helium do you have if the atomic weight of helium is 4amu
What is 2 moles
When an acid is slowly added to a base, or a base to an acid, the neutralization reaction can be observed in detail.
Titration
When an item is heated in order to allow more solute to dissolve past the point of saturation, then the solution is cooled, this creates what type of solution?
What is super saturated
Surfactants work by making emulsions and hydrophobic molecules in this form.
What is Micelle