Density
KMT
Matter
Separation Techniques
Gas Laws
100
What are the units for density?
g/mL
100
What is the phase change at number 2?
Freezing
100
Salt dissolved in water is what kind of mixture?
Homogeneous mixture (solution)
100
If we have iron and sand mixed together, what kind of separation technique do we use?
Magnetic separation
100
Which gas laws involves pressure and volume only?
Boyles Law
200
What is the formula for density?
D=m/v
200
What is the phase change at 5?
Deposition
200
Milk is an example of what kind of matter?
Colloid
200
We are boiling spaghetti noodles in hot water. When the noodles are done cooking, what separations technique do we use?
Filtration
200
Which gas law involves volume and temperature only?
Charles Law
300
A thin glass bottle holds 25 ml of liquid and has a mass of 19 grams. Calculate the density. Round to the nearest significant figure.
0.76 g/mL
300
What is the phase change at 6?
Sublimation
300
Sandy water is an example of what kind of mixture?
Suspension
300
You have salt dissolved in water to form a solution. If you heat the water up, this is an example of what separation technique?
Evaporation
300
Do the variables in Boyles law have a direct or indirect relationship?
Indirect
400
A pencil has a density of .875 g/ml. It has a mass of 3.5 grams. What is the volume? Round to the nearest significant figure.
4 mL
400
Is the phage change at 5 endothermic or exothermic?
Exothermic
400
Fog is an example of what kind of matter?
Colloid
400
Circular motion helps denser components move away from the center of the rotation, used then solid particles will not settle very fast or are to small to filter. What separation technique is being described?
Centrifugation
400
A gas at a pressure of 122.5 kPa is collected and the recorded volume was 171 mL. The volume was changed to 50.0 mL. What is the pressure of this system?
41.9 KPa
500
If the density of 45.0 cm3 block of wood is 0.65 g/ml calculate the wood’s mass. Round to the nearest significant figure.
29 g
500
Is the phase change at 6 endothermic or exothermic?
Endothermic
500
Oil in water is an example of what kind of mixture?
Suspension
500
What separation technique separates compounds in a solution with the same properties? An example being having an ink spot on paper, adding the paper to water, and then the water climbs the paper. This separates the colors in the ink.
Chromatography
500
A gas has a volume of 752 mL at -17.0 °C and 275.0 mmHg. What would the volume of the gas be at 215.0 °C and 538.0 mmHg of pressure?
0.733 L