Aqueous Solutions
The substance that is being dissolved.
What is a solute?
Will increasing the surface area of a sugar cube increase or decrease the rate of dissolution?
Increase
Chemical Formula Cl2(CaLi4)3
Which elements are represented?
Chlorine, Calcium, Lithium
Two or more different elements combined.
What is a compound?
Chemical change due to energy transfer.
What is a change of temperature?
Substance that is doing the dissolving; the base.
What is a solvent?
How can you increase the rate of dissolution of sugar in a cup of tea? Give 2 examples
agitate it(stir it) and surface area
Chemical Formula Cl2(CaLi4)3
How many atoms are represented for each element?
Chlorine- 2
Calcium- 3
Lithium- 12
Two or more atoms
What is a molecule?
Boiling, freezing, evaporation and dissolving are all examples of
Examples of a physical change
What is known as the universal solvent?
What is water?
If you put rock salt in three containers of water, one hot, one room temperature and one cold. Which one would dissolve first?
The salt in the hot water because it has more kinetic energy.
Chemical Formula Cl2(CaLi4)3
How many atoms in total?
17
a pure substance made up of only one type of atom
What is an element?
What type of change is indicated by the appearance of a solid at the bottom of the beaker that had 2 liquids mixed together?
Precipitant
Give three examples of substances that do not dissolve.
What is oil, sand, and rocks?
Agitation
What is shaking, stirring, or beating to increase rate of dissolution?
How many atoms of carbon are in a molecule of NH4C11O3?
Carbon- 11 atoms
Chemical Formula Cl2(CaLi4)3
How many total elements are in the formula?
3
A new substance is created.
The most important rule for a chemical change.
Water is the solvent and salt is the solute.
What is a solution of salt water?
Rate of dissolution
What is the time/speed it takes for a solute to dissolve?
How many atoms are in a molecule of NH4C11O3?
19 atoms
Chemical Formula H2K3Li6O4
Which elements?
How many atoms in total are in the formula?
Hydrogen, Potassium, Lithium, and Oxygen
15 atoms in total
Signs of a chemical change
Temperature, Odor, Light, Precipitant, Gas, Color