Properties of Physical and Chemical Changes

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Questions and Answers

What is a physical property?

A characteristic that can be observed or measured without changing the identity of the substance.

Melting point is a physical or chemical property?

True

What are the states of matter?

Solid, liquid, gas, or plasma.

Boiling point is a physical or chemical property?

True Signup and view all the answers

Freezing point is a physical or chemical property?

True Signup and view all the answers

Combustion is a physical property?

False Signup and view all the answers

What is the formula for density?

mass/volume Signup and view all the answers

What is buoyancy?

The ability to float. Signup and view all the answers

Buoyancy is a physical property?

True Signup and view all the answers

What is luster?

The way a surface reflects light; shiny. Signup and view all the answers

Luster is a physical property?

True Signup and view all the answers

What is conductivity?

The ability of a material to allow either heat or electricity to flow through it. Signup and view all the answers

Conductivity is a physical property?

True Signup and view all the answers

What does malleable mean?

Easy to shape or bend; flexible. Signup and view all the answers

Malleability is a chemical property?

False Signup and view all the answers

What does ductile mean?

Able to be stretched or drawn into wires without breaking. Signup and view all the answers

Ductility is a physical property?

True Signup and view all the answers

Odor is a physical property?

True Signup and view all the answers

Color is a physical property?

True Signup and view all the answers

Solubility is a physical property?

True Signup and view all the answers

Metal rusting is a physical change?

False Signup and view all the answers

Using bleach to remove a stain is a physical change?

False Signup and view all the answers

Breaking a cookie in half is a physical change?

True Signup and view all the answers

Flammability is a physical property?

False Signup and view all the answers

What is combustion?

To catch an object on fire, creating CO2 and H2O. Signup and view all the answers

What is melting?

Using temperature to change the molecules from solid to liquid organization. Signup and view all the answers

What is baking or cooking?

Using heat, molecules of the ingredients are put through a chemical reaction that creates a new product. Signup and view all the answers

Study Notes

Physical Properties and Their Definitions

Physical properties can be observed or measured without altering the substance's identity; the chemical formula remains unchanged.
Melting point is the temperature at which a solid becomes a liquid, classifying it as a physical property.
State of matter refers to solid, liquid, gas, or plasma, and is considered a physical property of matter.
Boiling point is the temperature at which a liquid transforms into a gas, also a physical property.
Freezing point is the temperature at which a liquid turns into a solid; this is another example of a physical property.
Density is calculated as mass divided by volume, expressed in grams per mL or grams per cm³, making it a physical property.
Buoyancy describes the ability to float, categorized as a physical property.
Luster indicates how a surface reflects light, characterized as shiny, and is a physical property.
Conductivity refers to a material's capacity to conduct heat or electricity, also a physical property.
Malleability is the ability of a material to be easily shaped or bent; it's classified as a physical property.
Ductility is the capacity to be drawn into wires without breaking, considered a physical property.
Odor is described as a physical property, relating to the scent emitted by a substance.
Color, determined by the quality of light reflected from an object, is a physical property; variations include red, blue, etc.
Solubility is the ability of a substance to dissolve in water without changing its formula, making it a physical property.

Chemical Properties and Changes

Combustion is a chemical property where hydrocarbons react with oxygen to produce new compounds (CO2 and H2O).
Metal rusting is identified as a chemical change due to its reaction with oxygen, forming rust.
The action of bleach removing a stain is a chemical change as it breaks down stain molecules.
Breaking a cookie in half is a physical change, with unchanged molecules regardless of its form.
Flammability is identified as a chemical property since igniting an object results in new molecules being created.

Other Relevant Processes

Combustion involves igniting an object, leading to the formation of CO2 and H2O as byproducts.
Melting uses temperature to alter the state of molecules from solid to liquid.
Baking or cooking initiates chemical reactions through heat that transform ingredients into new products.

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Description

Explore the definitions and characteristics of physical properties and chemical properties through this informative quiz. Test your knowledge on concepts like melting point and understand how they relate to the changes substances undergo.