Exploring Energy Transfers in Phase Changes

What is the main focus of the phase-change unit in this lesson?

• Studying biological processes

• Understanding energy transfers

• Understanding chemical reactions

• Learning about electrical circuits

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

In the hands-on experiment, what do the magnetic marbles represent?

• Cells in a biological system

• Atoms in a chemical reaction

• Molecules in different states of matter

• Electrons in an electric field

What does shaking the cup with magnetic marbles simulate?

• The growth of plants

• The flow of water

• The movement of molecules in different states

• The movement of electrons

In the simulation, what does a darker color indicate about the kinetic energy of molecules?

• Constant kinetic energy

• No kinetic energy

• Lower kinetic energy

• Higher kinetic energy

What happens to the temperature when energy is added to a substance in the simulation?

• It decreases

• It remains the same

• It fluctuates

• It increases

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is kinetic energy?

• Energy stored in chemical bonds

• Energy due to an object's position

• Energy released during a chemical reaction

• Energy that an object has because it is moving

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

What does temperature measure in a substance?

• The total energy of the substance

• The average kinetic energy of molecules

• The potential energy of molecules

• The chemical energy of the substance

Tags

NGSS.MS-PS1-4

What should you do after reading the article in the homework section?

• Create a presentation

• Discuss with a partner

• Answer the questions at the bottom

• Write a summary

In the homework section, what are you modeling in the first screen?

• Water in a freezer

• Ice melting

• Steam condensing

• Water on a stove

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the final step of lesson 2.2?

• Reading an article and answering questions

• Conducting an experiment

• Completing a quiz

• Watching a video