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WorksheetsChemistry test ????
Total questions: 26
Worksheet time: 16mins
A student is using a syringe, water, and blocks to Investigate the compressibility of gases and liquids. They put 20.0 mL of air in the syringe and push on the plunger and are able to compress it to 10.0 mL. Next, they put 20.0 mL of water into the syringe and are not able to compress it at all. Which of the following statements would be a valid conclusion for this investigation?
Air is compressible while water is not compressible
Adding pressure to the syringe allowed the gas to be compressed from 20mL to 10mL
Gases have more space between their molecules than liquids do, thus making them more compressible.
Water would have compressed if more pressure had been used.
Liquids and takes the form of the container.
(a)
Two basic properties of the gas phase are no definite and no definite volume.
(a)
Explain why molecules get excited when the temperature increase.
(a)
Molecules in are tightly packed, usually in a regular pattern.
(a)
Molecules in are well separated with no regular arrangement.
(a)
A student is studying a sample of neon inside a piston cylinder. At constant temperature the cylinder has a volume of 0.80L at a pressure of 1.5 atm. When the piston is compressed to a pressure of 2.1 atm, what is the new volume of the cylinder?
1.6 L
1.4 L
0.57L
0.80 L
A 343 mL of CO2 is at a temperature of 25 C If the temperature is decreased to 15 C what the new volume of the CO2 if the pressure remains constant?
206 mL
331 mL
354 mL
571 mL
Ammonium chloride, Cadmium, Zinc chloride, Lithium copper oxide, Nickel and Lead oxide are some of the other commonly used chemical compounds in batteries. The stored chemical compounds inside the battery will yield energy.
(a)
In which phase does matter have a definite volume and shape ?
Solid
Gas
Liquid
Plasma
In which of the following phases does matter have a definite volume, but no definite shape ?
Plasma
Liquid
Gas
Solid
In which of the following phases does matter have no definite shape or volume ?
Which phase of matter is the least compressible ?
Which phase of matter shows the greatest changes in volume with changes in temperature and/or pressure ?
Liquid
Plasma
Solid
Gas
The term ''fluids'' refers to which phase(s) of matter ?
Gases only
Liquids only
Molecules in are close together with no regular arrangement.
Liquids
Gases
Solids
Plasma
A student is studying a sample of carbon dioxide gas inside a small syringe. At constant temperature the syringe has a volume of 89.6 mL at a pressure of 3.00 atm. When the syringed is expanded to a volume of 215 mL, what is the new pressure Inside the syringe?
0.300 atm
1.00 atm
1.25 atm
2.50 atm
What is the volume of 1 mol of any gas at STP ?
6.02 x 10 23 L
3.00 x 10 8 L
273.15 L
22.4 L
A gas was held at a constant temperature in a closed system. The initial pressure of the gas was 1.20 atm, while its initial volume was 2.30 L. The final volume of the gas was 1.50 L. What was the final pressure of the to the nearest hundredth of an atmosphere?
1.84 atm
8.44 atm
213 atm
213.15 atm
Given the two gas samples shown are of equal volume, the average kinetic energy of the particles in container A is
Equal to the average kinetic energy of particles in container
Double the average kinetic energy of particles in container
Half of the average kinetic energy of the particles in container
One-third the average kinetic energy of the particles in container
A student using a syringe and a wooden block to demonstrate one of the gas laws. The Instructions on the activity tell the student to the syringe with 50 of air, cap the top of the syringe, and then use the block of wood to help push the plunger on the syringe down to 20 While pushing the plunger, the student finds it more difficult to decrease the volume of air in the syringe While discussing the results with the rest of the lab group, the group decides that the moving the plunger caused by an increase in pressure inside the syringe What gas law is this activity illustrating ?
Avogadro's Law
Boyle's Law
Charles Law
Dalton's Law of Partial Pressures
A student is an with , liquids, and gases. They put each substance Into a large syringe and press down. The student is not able to compress the solld or the liquid into a smaller volume. When they get to the gas, they notice that it will compress into a smaller volume. Why are gases more compressible than liquids and solids?
Gas particles move slowly and this allows for them to be pushed together easily ?
The lower kinetic energy of solid particles makes their particles closer and less compressible.
Since gas particles are spread so far apart , they are easily compressed
All of the above
Which of the following best explains why CO2 gas is easily compressible but solid CO2 (dry ) incompressible?
The molecules of CO2 gas are much closer together than the molecules in dry ice.
The molecules of solid CO2 are much closer together than the molecules of CO2 gas.
The molecules of CO2 gas are much smaller than the molecules of solid CO2.
The molecules of CO2 gas attract one another , while the molecules of the solid CO2 repel one another
A sample of a compound is added to distilled water in a clean beakerA reaction occurs, and the water temperature drops rapidlyWhich of the following statements is best supported by this observation ?
An endothermic reaction occurred.
A dehydration reaction occurred.
The water was originally than the compound
The beaker was contaminated by another compound
A sample of C*O_{2}(9) placed in a 125 flask where it exerts a pressure of 67.5 mmHg. If it is transferred to a 500. mL flask at the same temperature, which of the following is most likely its new pressure?
270. mmHg
67.5 mmHg
16.9 mmHg
8.45 mmHg
A glass jar with a pressure of 2.50 atm contains an unknown amount of mixed gases at 298K. If the pressure is reduced to 1.71 atm, which best represents the new temperature of the gases inside the jar?
-69 C
0 C
25 C
273 C
