Exploring Phases of Matter and Conservation of Mass

The video tutorial introduces the concept of matter, explaining its definition and the four states: solid, liquid, gas, and plasma. It discusses mass, its measurement, and the difference between mass and weight. The law of conservation of mass is explained with examples. The video also classifies matter into mixtures and pure substances, further dividing them into heterogeneous and homogeneous mixtures, and elements and compounds. The tutorial concludes with a summary of the key points.

What is the definition of matter?

• Anything that is in motion

• Anything that produces light

• Anything that has mass and occupies space

• Anything that can be seen and touched

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Which state of matter has a definite shape and volume?

• Solid

• Gas

• Liquid

• Plasma

What happens to a liquid when it is further heated?

• It becomes plasma

• It remains a liquid

• It becomes a solid

• It becomes a gas

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Where is plasma commonly found?

• In the human body

• In the atmosphere

• In the core of stars

• In the ocean

How can the mass of an object be measured?

• By its color

• By its temperature

• By its volume

• By the force needed to move it

What is the difference between mass and weight?

• Mass is the amount of matter, weight is the force of gravity on an object

• Mass is the force of gravity on an object, weight is the amount of matter

• Mass and weight are the same

• Mass is measured in kilograms, weight is measured in liters

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What does the law of conservation of mass state?

• Mass is always greater than weight

• Matter is neither created nor destroyed in a chemical reaction

• Mass can change depending on location

• Matter can be created and destroyed

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NGSS.MS-PS1-5

What is a mixture with a uniform composition called?

• Compound

• Element

• Homogeneous

• Heterogeneous

Which of the following is an example of a pure substance?

• Sand in an hourglass

• Orange juice

• Lava lamp

• Pure gold

What can a compound be broken down into?

• It cannot be broken down

• Only other compounds

• Elements and other compounds

• Only elements

Tags

NGSS.MS-PS1-5