Solubility / Concentration Problems
What does it mean if a solution is saturated?
A solution contains all the solute that the solvent can possibly dissolve.
Iron is magnetic, use a magnet to pull the iron shavings out.
What is Bonding?
When atoms come together to form pure substances.
What happens with Electrons during Ionic Bonding?
Electrons are transferred.
Li + Cl
LiCl
You are able to add .005grams of a solute and given time it dissolves. Was the solution saturated? Explain.
No, if more solute could dissolve the solution was not saturated.
What are the two types of Mixtures?
Heterogenous and Homogenous.
What are Valence Electrons?
Electrons in the outer shell of an atom.
What happens during Covalent Bonding?
Electrons are shared.
Balance the following combination of elements:
K + O
K2O
Copper Chloride is dissolved into water. What is the solute and what is the solvent?
Solute = Copper Chloride
Solvent = Water
How could you separate a mixture of a solid dissolved in a liquid?
Boil the liquid away.
What is Ionic Bonding?
A chemical bond between a metal and nonmetal.
What type of atom is discreet, a covalently bonded atom or an Ionic bonded atom?
Covalently Bonded atom.
Balance the following combination of elements:
Mg + N
Mg3N2
If 23.56g of a substance will dissolve in 124ml of solvent to form a saturated solution, what is the solubility of the substance.
(23.56/124)x100 = 19g/ml
How could you separate a mixture of two salts? Explain what characteristic property of matter you could use.
What is Covalent Bonding?
A chemical bond between two nonmetals.
When atoms combine to form compounds they try to mimic the Noble Gasses. What rule are they trying to follow?
Balance the following combination of elements:
Al + F
AlF3
Given the following data, what is the solubility of the solid?
Mass of Dry Boiling Dish: 123.78
Mass of boiling dish plus solution: 148.75
Mass of the dry boiling dish plus solute: 128.42
22.82g/ml
How could you separate a mixture of two liquids? Explain what characteristic property of matter you would use.
You could boil one of the liquids away. Every pure substance has its own unique boiling point which will be different than another pure substance.
What does it mean that compounds are made of two or more types of atoms bonded together in a fixed ratio?
Every compound is unique, H2O is water H2O2 is hydrogen peroxide.
What do you call covalently bonded atoms?
Molecules
Balance the following combination of elements:
Mg + C
Mg2C