Exploring Physical and Chemical Properties

The video tutorial covers the concepts of physical and chemical properties, explaining how they relate to physical and chemical changes. It details various physical properties like viscosity, conductivity, malleability, and density, and how they can be used to identify and separate materials. The tutorial also discusses physical changes, emphasizing their reversibility and the constancy of identity. It then shifts to chemical properties, focusing on flammability and reactivity, and explains chemical changes, highlighting their irreversibility and the formation of new substances. The video concludes with signs of chemical changes and the principle of mass conservation.

Which of the following is an example of a physical property?

• Flammability

• Reactivity

• Color

• Rusting

What is the term for the ability of a liquid to keep flowing?

• Density

• Malleability

• Viscosity

• Conductivity

Why are metal wires often wrapped in plastic?

• To make them more malleable

• To increase conductivity

• To prevent rusting

• To reduce heat conduction

Which physical property allows gold to be hammered into thin sheets?

• Viscosity

• Density

• Malleability

• Conductivity

How can density be used to test the purity of a substance?

• By comparing its density to that of a pure substance

• By observing its color

• By checking its malleability

• By measuring its boiling point

What happens to the identity of a substance during a physical change?

• It remains the same

• It changes completely

• It becomes a new substance

• It becomes irreversible

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Which of the following is a chemical property?

• Color

• Size

• Viscosity

• Flammability

What is a key characteristic of a chemical change?

• The substance remains the same

• The change is reversible

• A new substance is formed

• The properties remain unchanged

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

• Change in size

• Color change

• Production of heat or light

• Production of gas

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What does the conservation of mass state?

• Mass can be created or destroyed

• Mass remains constant in physical and chemical changes

• Mass changes form but not amount

• Mass is only conserved in physical changes

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