Exploring States of Matter and Conservation of Mass

The video tutorial covers the fifth-grade unit on the changing states of matter, focusing on two standards: using a particle model to explain phase changes and measuring mass conservation. It explains the difference between mass and weight, demonstrates how to use a triple beam balance, and includes three activities: the ice melt race, cookie crumbles, and Kool-Aid mixing. Each activity emphasizes the concept of mass conservation. The video concludes with a reminder of additional resources available for further learning.

What is the arrangement of particles in a solid?

• Far apart with little vibrational frequency

• Closely packed with little vibrational frequency

• Closely packed with high vibrational frequency

• Far apart with high vibrational frequency

Which phase of matter has particles with the highest energy and vibration?

• Solid

• Plasma

• Liquid

• Gas

What does the second standard (5-PS1-2) focus on?

• The arrangement of particles in different states of matter

• The conservation of mass during phase changes and reactions

• The behavior of gases in different conditions

• The properties of liquids and solids

Tags

NGSS.5-PS1-2

In a closed system, what happens to the mass of substances before and after a reaction?

• It decreases

• It increases

• It remains the same

• It fluctuates

Tags

NGSS.5-PS1-2

What is the first step in using a triple beam balance?

• Add weights to the balance

• Adjust the riders to the right

• Ensure the pointer is zeroed

• Place the object on the balance

What should students do after measuring the mass of the ice cube and baggie in the Great Ice Melt Race?

• Add more ice cubes to the baggie

• Weigh the baggie without the ice cube

• Melt the ice cube as quickly as possible

• Remove the ice cube from the baggie

Tags

NGSS.5-PS1-2

What is the purpose of the formative assessment probe 'Ice Cubes in a Bag'?

• To measure the temperature of the ice cubes

• To understand students' initial thoughts on mass conservation

• To see how fast students can melt ice cubes

• To compare the size of different ice cubes

Tags

NGSS.5-PS1-2

What should students do after crumbling the cookie in the second activity?

• Measure the mass of the crumbled cookie

• Eat the cookie

• Throw away the crumbled cookie

• Compare the size of the crumbs

Tags

NGSS.5-PS1-2

What is the expected outcome when Kool-Aid is mixed with water in terms of mass?

• The mass will increase

• The mass will decrease

• The mass will remain the same

• The mass will fluctuate

Tags

NGSS.5-PS1-2

What is the main goal of the activities involving mass measurements?

• To practice using a triple beam balance

• To understand that mass is conserved during physical changes

• To compare different types of balances

• To learn how to melt ice cubes quickly

Tags

NGSS.5-PS1-2