Show:
Open, No Close the Door!
Heat It up!
States Matter!
Molecules in Motion
Oldies but Goodies
100
You place a round clay ball on a mass scale. After measuring the start mass of the ball, you flatten the ball into a pancake shape, making sure that no clay fell off or stuck to your fingers. What happens to the end mass.
It stays the same.
100
Heating by direct contact.
What is heat conduction interaction?
100
Gas to a liquid
What is condensation?
100
Molecules in a fixed position.
What is a solid?
100
Mathematical equation for density is _____.
Mass divided by volume.
200
Caroline puts a small piece of dry ice in a jar and then seals the jar so that nothing can get in or out. She measures the start mass of the jar. It is 200 g. She then places the jar in the sun. After an hour, the dry ice has become carbon dioxide gas. What is the end mass?
200 g.
200
Two interactions that involve transfer of heat.
What are heat conduction and infrared radiation interactions?
200
Gas to a solid.
What is deposition?
200
Molecules that move freely over one another and take the shape of the container.
What is a liquid?
200
In a _______________ electric-circuit interaction where 4 bulbs are connected, and one of the bulbs goes out, the other three stay lit.
What parallel?
300
Which of the following experiments done in class provided evidence that volume is not always conserved?
Mixing alcohol and water
300
How does the stored phase energy of the melting ice change while the ice is melting?
The stored phase energy increases.
300
As a solid turns into a liquid, does it lose or gain energy?
It gains energy.
300
Molecules that move freely and take up all the space in their container.
What is a gas?
300
Describe how we can find the volume of an irregular object.
Water displacement- measure a certain amount of water in mL in a graduated cylinder. Add the object to the cylinder. Subtract the original amount in mL from the new or raised amount. This gives the volume of the object.
400
At a birthday party, a two-liter bottle of soda was opened, but no one drank any of the soda. During the night, gas escaped from the open bottle. What happened to the mass of the contents in the bottle and why?
It decreased because gas has mass and it left the system.
400
On a clear winter day, a girl takes off her heavy winter jacket to bask in the sun. There is and interaction between the sun and the girl. This example shows which type of heat energy transfer?
Infrared Radiation Interaction
400
What happens to the temperature of melting ice?
It stays the same.
400
What does the temperature of a substance tell you about particles?
Temperature tells you how fast particles are moving in the substance.
400
The amount of matter in an object.
What is mass?
500
What does the Law of Conservation of Mass state?
Mass in a closed system is neither created nor destroyed, but can change states.
500
Warm sodas are packed into an ice filled cooler. The cooler is closed. Before the ice melts, which energy transfer diagram best describes the interaction between the soda and the ice in the cooler? (Draw diagram on scrap paper)
Diagram should show soda decreasing in thermal energy, and arrow that says heat energy pointing to ice and ice increasing in thermal energy. (This shows a warmer object transferring heat to a cooler object).
500
What happens to temperature during sublimation?
Temperature stays the same.
500
The faster atoms move the _____________ the substance is.
Warmer
500
The space an object or matter takes up.
What is volume?