Podcast
Questions and Answers
What is a phase change?
What is a phase change?
- A chemical change that alters the composition of a substance
- A change from one state of matter to another (correct)
- A reaction caused by exposure to sunlight
- A transformation involving only gases
What happens to the particles during a phase change?
What happens to the particles during a phase change?
- They completely change their chemical makeup
- They cease all movement temporarily
- They become more tightly packed together
- They move more freely and have a weaker attraction in comparison to a solid (correct)
What is the result of heat energy being absorbed during a phase change?
What is the result of heat energy being absorbed during a phase change?
- Particles completely stop moving
- Particles speed up and expand (correct)
- Particles slow down and move closer together
- Particles transform into a gas
Which phase change involves molecules slowing down, moving closer together, and releasing heat energy?
Which phase change involves molecules slowing down, moving closer together, and releasing heat energy?
How do liquids differ from solids in terms of particle arrangement?
How do liquids differ from solids in terms of particle arrangement?
Which type of change only affects the physical appearance of a substance?
Which type of change only affects the physical appearance of a substance?
What is the length of a day on the Sun?
What is the length of a day on the Sun?
What is the primary composition of the Sun?
What is the primary composition of the Sun?
What is the diameter of Mercury, the Sun's closest neighbor?
What is the diameter of Mercury, the Sun's closest neighbor?
Which planet is known as the 'heart of the solar system'?
Which planet is known as the 'heart of the solar system'?
What is the distance between Earth and the Sun?
What is the distance between Earth and the Sun?
What is the mass of the Sun?
What is the mass of the Sun?
What is the term used to describe meteoroids entering the Earth's atmosphere and burning up?
What is the term used to describe meteoroids entering the Earth's atmosphere and burning up?
Which state of matter has particles that are tightly packed together and have a definite shape and volume?
Which state of matter has particles that are tightly packed together and have a definite shape and volume?
What is the term for Near Earth Objects that have mass and enter the Earth's atmosphere at high speed?
What is the term for Near Earth Objects that have mass and enter the Earth's atmosphere at high speed?
In which state of matter are particles widely spaced apart, allowing them to move freely and randomly?
In which state of matter are particles widely spaced apart, allowing them to move freely and randomly?
What is the term for when a solid turns directly into a gas without passing through the liquid phase?
What is the term for when a solid turns directly into a gas without passing through the liquid phase?
Which celestial body is known for having a strong attraction to comets and asteroids?
Which celestial body is known for having a strong attraction to comets and asteroids?
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