Stuff Flashcards
What is a solvent
The part of a solution present in the largest amount
What is a solution
A well mixed mixture that contains a solvent and at least on solute
What is a solute
A substance present in a solution in a smaller amount
In a solution, the______is dissolved by the _______
Solute, solvent
Why is water called the universal solvent
Because it dissolves so many substances
What are some facts about the effects of solutes on solutions
Solute a raise the boiling point of a solvent, the temperature must drop lower than 0 degrees celsius for water to freeze when a solute is dissolved in the water, and antifreeze boils at a lower temperature than pure water
What is a dilute solution
Mixture that has only a little solute dissolved in a certain amount of solvent
What is a concentrated solution
Has a lot of dissolved solute in the solvent what is solubility
What is solubility
Measure of how much solute can dissolve in a solvent at a given temperature
What is a saturated solution
It is when you’ve added so much solute that no more dissolves
What is a supersaturated solution
Has more dissolved than is predicted by its solubility at the given temperature
What is an unsaturated solution
A mixture in which more solute can be dissolved
What are three factors that affect the solubility of a substance
Pressure, type of solvent, and temperature
The higher the pressure of the gas, the_____gas can dissolve in a solvent
More
What are some facts about temperature and solubility
Most solids become more soluble as the temperature goes up, most gasses become less soluble as the temperature goes up, carbon dioxide dissolves better in cold water than in hot water
What are valence electrons
Electrons that have the highest energy level and are held most loosely
What is the atomic number
The number of protons in the nucleus of an atom
What is a period
A row of elements on a periodic table
What is a group/family
Elements in the same column
Is the following sentence true or false? The number of valence electrons in an atom of an element determines the ways in which the atom can bond
True
Is the following sentence true or false? When Atoms form bonds, electrons maybe transferred or shared between Atoms
True
How are elements represented in the periodic table
By symbols
The____________of an element is the number of protons in the nucleus of an Adam
Atomic number
What is a row of elements across the periodic table called
A period
Describe how atomic number changes across a period of elements
It goes up by one
What are elements in the same column of the periodic table called
Group or family
Elements within a group always have the same number of
Valance electrons
The force of attraction that holds two atoms together is called a
Chemical bond
Each element is represented in the periodic table by a
Symbol
The number of protons in the nucleus of an Atom is called the
Atomic number
A row of elements across the periodic table is a
Period
Elements in the same column of the periodic table are called a
Group or family
What is the greatest number of valance electrons an atom can have
Eight
