Gas Laws
Heating curve
Solutions
Lab equipment
Random
100
Who proposed the law that relates how a change in volume causes a variation of pressure while keeping the temperature constant.
Boyle-Mariotte
100
What magnitudes are represented in each axis of a heating curve?
Temperature vs time
100
Which are the components of a solution?
Solute and solvent
100
Lab equipment: whats the name of a tall narrow container with a volume scale used especially for measuring liquids.
Graduated cylinder
100
Which are the three basic states of matter?
Solid, liquid and gas
200
Which gas law explains the principles of an express pot?
Gay Loussac
200
What is the term used for the process in which a gas changes into a liquid?
Condensation
200
What is the name of a solution that cannot dissolve more solute?
Saturated
200
Lab equipment. Whats the name of a thin glass tube closed at one end, used to hold small amounts of material for laboratory experiments.
Test tube
200
What phase transition happens during the process of boiling?
Liquid to gas
300
Definition: This magnitud is a measure of the number of collisions of the gas particles with each other and with the sides of the container that they are in.
Pressure
300
Which phase transition involves a liquid turning into a solid?
Freezing
300
Calculate the concentration of a solution containing 25 grams of salt dissolved in 50 cm³ of water. Give the answer in kg per liter.
0.5 kg/l
300
What is the purpose of a Bunsen burner in a laboratory?
To heat substances
300
What is the difference between fusion and solidification on a phase change diagram?
Fusion: change from solid to liquid. Temperature increases.
Solidification: change from liquid to solid. Temperature decreases.
400
If we put 12 liters of air into a balloon at 27 ºC, what is the final volume if we heat the balloon to 80ºC?
14.2 liters
400
How can you identify a phase change?
The curve has no slope
400
If 50 milliliters of ethanol are dissolved in water to make a total solution volume of 0.250 liters, what is the volume percent concentration of ethanol in the solution?
20%
400
What should you do if you accidentally spill a chemical on your skin in the laboratory?
Wash the affected area with plenty of water
400
How does an increase in temperature affect the solubility of solids in liquids?
The solubility increases
500
A gas with fixed volumen is heated from 27ºC to 77ºC. If the initial pressure was 1500 mmHg, what is the final pressure?
1750 mmHg
500
Which are the names of the two characteristic temperatures of a substance related with phase changes?
Boiling point and melting point
500
What term refers to the maximum amount of solute that can dissolve in a solvent at a specific temperature
Solubility
500
Which pictogram on a chemical label signifies that the substance is corrosive?
500
What is the difference between an hypothesis and an observation?
A hypotesis is an educated guess or prediction based on observations