Exploring Physical and Chemical Properties and Changes

This video tutorial covers the concepts of physical and chemical properties and changes. It begins with an introduction to physical properties, such as color, texture, and density, and explains how these can be observed without altering a substance's composition. The video then transitions to chemical properties, discussing reactivity and flammability. The differences between physical and chemical changes are highlighted, with examples like melting ice and burning wood. The tutorial concludes with tips on identifying changes, emphasizing the importance of determining if a new substance is formed or if the change can be reversed.

Which of the following is NOT a physical property?

• Color

• Reactivity

• Density

• Malleability

What does malleability refer to?

• Ability to conduct electricity

• Ability to be shaped without breaking

• Ability to dissolve in water

• Ability to change color

What is the boiling point of a substance?

• The temperature at which a solid becomes a liquid

• The temperature at which a liquid becomes a gas

• The temperature at which a liquid becomes a solid

• The temperature at which a gas becomes a liquid

Tags

NGSS.MS-PS1-4

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Which of the following is a physical property?

• Reactivity

• Flammability

• Oxidation

• Density

Which property describes a substance's ability to burn in the presence of oxygen?

• Oxidation

• Flammability

• Toxicity

• Reactivity

What is an example of a physical change?

• Cooking an egg

• Melting ice

• Rusting iron

• Burning wood

What happens during a phase change?

• The substance decomposes

• The substance changes its state but remains the same

• A new substance is formed

• The substance changes its chemical composition

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of the following is a chemical change?

• Burning a log

• Dissolving sugar in water

• Cutting a lemon

• Boiling water

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following is NOT evidence of a chemical change?

• Formation of a precipitate

• Formation of a gas

• Change in color

• Change in state

Tags

NGSS.MS-PS1-2

What question should you ask to determine if a change is physical?

• Did the temperature change?

• Did you make something new?

• Did the smell change?

• Did the color change?

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4