Mixture and Solution Flashcards
What does conserve mean?
to stay constant during an interaction
What are constrains?
Limitations or restrictions
When evaluation or testing something, you need to know the
Criteria
_____is natural form of a substance
Cristal:
the solid form of a substance which can be identified by its physical properties
_______ is a process of substances becoming incorporated uniformly into another.
Dissolving
Energy can take a number of forms such as heat and light
true
A————Is a scientist who designs and build systems that result in new product or solve problems
Engineer
change in state from liquid to a gas
ex: water becomes water vapor
evaporation
Mass is a quantity of matter
true
What is a particle?
a very small piece or part
Physical proper describes as
color, size, shape
which method was the best to separate gravel?
Sifting (screen)
which method was the best to separate the power?
filtration
Which method was the best to separate the salt?
evaporation
Transparent means that you can’t see though the liquid or image
FALSE
What is the purpose of a balance?
to compare masses
Which of the fallow would not be considered a solute?
Gravel
example of solute is
salt, sugar, Lemone power,
a solute is a solid that is dissolved into a liquid.
salt sugar
Water is considered a
universal solvent
The solute can exist in all three forms of matte
solid, liquid, or gas.
all solutions are mixture
true
all mixture are solution.
, not all mixtures are solutions.
For example, when we bake a cake, it’s a result of a mixture of eggs, flour, sugar, and other ingredients
What is the mass of 50ml of water
50 grams
a change in the size, shape, or state of matter
physical change
a change in which new matter, with new physical properties, is created
chemical change
when two or more chemicals are mixed together and a change occurs
chemical reaction
temperature change
- gas formation
- solid formation
indicators of a chemical change
the substance that occurs when a chemical change occurs
product
any solid produced in a chemical change
precipitate
solvent
a substance which takes in, dissolves, another substance
solute
a substance that dissolves to form a solution
solubility
a property that describes a solute’s ability to dissolve in a solvent
universal solvent
water
saturated solution
a solution in which as much solute as possible has dissolved
Is there a limit to
Is there a limit to the amount of solute that can dissolve in a given volume of solvent?
Yes.
How do you determine the amount of solute in a saturated solution?
First filter out the undissolved material. Next, weigh the saturated solution and subtract out the mass of the solvent.
point of saturation
No more solute can dissolve in the solvent, but all solute has dissolved.
amount of salt needed to saturate 50 ml of water
10-15 grams
amount of Epsom salts needed to saturate 50 ml of water
25-40 grams
What can be used to identify an unknown substance?
solubility
What factors influence solubility?
type of solute and type of solvent
Define insoluble.
unable to dissolve
an indication of a saturated solution
an undissolved layer of solute
highly soluble material
Espom salts
not a very soluble material
salt
Define soluble.
able to dissolve
mixture
a combination of two or more things that can be separated without changing the physical properties
(Mixtures are NOT chemically bound.)
solution
a special type of mixture
3 characteristics of solutions
- one substance dissolves into another
- must be transparent
- separated, usually using evaporation
physical properties
characteristics of an object
examples of physical properties
size, shape, color, state of matter
examples of mixtures
paint, ice cream, soda, orange juice, trail mix, mayonnaise
dissolve
the process in which one substance completely mixes with another and seems to “disappear”
How is a saltwater solution separated?
Evaporate the water. Salt crystals are left behind.
2 physical properties of salt crystals
square with an x running corner to corner
True or False:
A mixture is always a solution.
False
True or False:
A solution is always a mixture.
True
True or False:
Some mixtures are solutions.
True
diluted
containing a low amount of dissolved solute in a given volume of solvent
volume
the amount of space in a 3D object
ex. of a diluted fruit punch solution
- light red in color
* weak in taste
an example of a concentrated fruit punch solution
- dark red in color
* strong in taste
Concentration affects a solution’s ____________.
mass
When comparing the concentration of two or more solutions, compare equal
volumes
Which sample is more diluted?
A. 500 ml of water + 15 g of salt
B. 1000 ml of water + 30 g of salt
They are equally concentrated.
Which sample is more diluted?
A. 500 ml of water + 20 g of salt
B. 1000 ml of water + 20 g of salt
B is more diluted.
Which sample is more concentrated?
A. 100 ml of water + 50 g of salt
B. 1000 ml of water + 50 g of salt
A is more concentrated.
Which sample is more concentrated?
A. 100 ml of water + 10 g of salt
B. 10 ml of water + 5 g of salt
B is more concentrated.
concentration
the relationship between the amount of dissolved solute in a given volume of solvent
highly concentrated
containing a high amount of dissolved solute in a given volume of solvent
