Show:
Vocabulary
Real World Applications
Labs Performed
Law of Conservation of Mass
Miscellaneous
100
A combination of two or more substances that are not chemically combined is a:
Mixture
100
When Kool-Aid is able to be dissolved into water, what is it called?
It is SOLUBLE.
100
In our salt labs, what was the water called?
The water was the SOLVENT.
100
What is true about a substance that has a lot of mass?
It contains a lot of matter.
100
A solution in which no more solid will dissolve is called...
Saturated solution
200
Unable to dissolve in a substance is called...
Insoluble
200
When sugar is added to water does it A) melt B) dissolve C) do nothing D) float on the top
B) Dissolve!!
200
What is the difference between a pure substance and a mixture?
Pure substances are made of one kind of particle; mixtures have two or more kinds of particles that are not chemically combined.
200
200mL of water is combined with 200mL of alcohol to form a solution. Explain what the new volume of the solution will be.
The volume of the solution will be less than 400mL, because the particles add together.
200
A Curtis made a salt solution using the following amounts of salt and water. Mass of salt 2 g. Mass of water 8 g. What was the mass of his solution?
2g (salt) + 8g (water) = 10g solution
300
True or False: Solvent means "able to dissolve"
False
300
What is called when Ms. G-K's Crystal Light packets (raspberry lemonade is my favorite flavor) dissolve fully into water?
They form a SOLUTION
300
In our salt labs, what was the salt called?
The salt was the the SOLUTE.
300
Sabina mixed 5g of yellow crystals with 20 mL of water to form a solution. What was the mass of the yellow solution? A. 15 g B. 20 g C. 25 g D. The mass cannot be calculated
C. 25g. Because 5g + 20mL = 25g. Nothing was removed or added, so the total mass has to the mass of the water PLUS the mass of the yellow crystals.
300
If you put sand in a container of salt, it would make a...
Mixture! Because the salt and sand are NOT chemically combined.
400
True or False: A colloid is "a homogeneous mixture of two or more substances"
False! A colloid is ACTUALLY a mixture in which the particles are dispersed throughout but are not heavy enough to settle out (ex. fog).
400
There was WAY to much sugar Ms. G-K's tea, so she had to add more water to make a solution less concentrated. What is this process called.
I had to DILUTE my tea with more water.
400
Once sugar has been dissolved in to water, can you filter the sugar out? Yes or No and why.
No, because once it's uniformly mixed (a homogenous solution), the filter won't be able to separate the sugar from the water. A filter can only separate insoluble substances.
400
How is weight different than mass?
Weight changes depending on gravity; mass always stays constant throughout the universe.
400
The attachment between two atoms in a molecule.
A chemical bond.
500
A solution in which as much solute as possible has been dissolved.
A saturated solution.
500
Describe why scientists would perform the same experiments many times in a row.
So that most of the measurements will be close but not exactly the same.
500
The chemical name for ‘common salt’ is...
sodium chloride
500
4 grams of hydrogen will combine with 32 grams of oxygen to create: A. 36 grams of water B. 28 grams of hydroxide C. 32 grams of oxygen D. 36 grams of deuterium
A. 36 grams of water
500
Sodium and chlorine combine to form sodium chloride (table salt). Sodium and chlorine are: A. Producers B. Products C. Reactionaries D. Reactants
D. Reactants