One of the different shapes of the moon as it progresses through a 1 month cycle, as seen from the Earth.
100
What is condensation?
The phase change in which a gas changes into a liquid
100
What is vapor pressure?
The pressure exerted by a vapor.
100
Why do you think temperature is the measure of the average energy of motion of all the particles within a substance?
This is because that all the particles of a substance have the same energy of motion.
100
Estella investigated the properties of a grayish, shiny metal with a volume of 85 cubic centimeters and a mass of 212.5 grams. What is the density of the substance?
2.5 g/cm cubed
200
What is a physical change?
A change in physical properties of a substance, such as mass volume, shape, or density without changing the substance itself.
200
What is sublimation?
The phase change in which a solid becomes a gas, skipping the liquid phase.
200
What is volume?
The amount of space an object or substance takes up.
200
Suppose you inflate a balloon at room temperature, put the balloon into a freezer, and come back an hour later. What would the balloon look like?
The balloon will be deflated because the cold particles will come closer together.
200
What phase of matter has a definite volume but no definite shape?
Liquid.
300
What is heat energy?
The form of energy arising from the motion of all the particles in a system.
300
What is deposition?
The phase change in which a gas becomes a solid, skipping the liquid phase.
300
What is mass?
The amount of matter in an object.
300
At sea level water boils at 100 degrees C.On top of Mount Everest water boils at 71 degrees C. Explain the difference.
It boils at a lower temperature on Mount Everest because it has higher air pressure.
300
Dr. Love wants to find the average energy of motion of the particles within a block of steel. What property of the steel is Dr. Love trying to find?
Temperature.
400
What is temperature?
The measurement of the average energy of motion of the particles of matter in a substance.
400
What is melting point?
The temperature in which a substance begins to change from a solid to a liquid.
400
What is density?
The amount of mass in a given volume.
400
What is the density of a cube with sides of 4cm and a mass of 512g?
The density is 128.
400
Lead has a density of 11.3 g/cm cubed. What volume of lead has a mass of 226 g?
20 cm cubed
500
What is vaporization?
The phase change in which a liquid changes into a gas.
500
What is boiling point?
The temperature at which a substance begins to change phases from liquid to gas.
500
What is solute?
The substance dissolved by a solvent to form a solution.
500
In salt water, which is the solute and which is solvent?
The salt is solvent and the water is the solute.
500
What process lets you see your breath when the air is cold?