Introduction to Matter Flashcards 1-3

Questions and Answers

What is a chemical property?

A property of matter that describes a substance's ability to participate in chemical reactions.

What does the term reactivity mean?

Reactivity describes the ability of two or more substances to combine and form one or more new substances.

What is a chemical change?

A change that occurs when one or more substances change into entirely new substances with different properties.

How does a chemical change differ from a chemical property?

Chemical changes occur when one or more substances change into entirely new substances, while a chemical property determines whether a chemical change will occur. Signup and view all the answers

Rusting is an example of a:

Chemical change Signup and view all the answers

Which of the following is a characteristic property?

All of the above Signup and view all the answers

Give two examples of chemical properties.

Reactivity and flammability. Signup and view all the answers

What kind of change occurred to the Statue of Liberty?

A chemical change occurred. Signup and view all the answers

How can you tell the difference between a physical and a chemical property?

A physical property can be observed without changing the identity of the substance, while a chemical property can only be observed during a chemical change. Signup and view all the answers

Describe the difference between physical and chemical changes.

In a physical change, the shape or form changes without altering the identity of the matter, while in a chemical change, the identity and properties of the matter change. Signup and view all the answers

Identify two physical properties and two chemical properties of a bag of microwave popcorn.

Physical properties: Almost flat bag, cool to the touch. Chemical properties: Flammable bag, popcorn kernels that pop. Signup and view all the answers

Study Notes

Chemical Properties and Changes

Chemical property describes a substance's potential to engage in chemical reactions.
Reactivity indicates how easily substances can combine to form new ones.
A chemical change results in the formation of new substances with distinct properties.

Distinctions Between Properties and Changes

Chemical changes involve transformations into new substances; chemical properties predict these changes.
Rusting exemplifies a chemical change as iron reacts with oxygen, resulting in rust.

Characteristic Properties

Characteristic properties, such as density and solubility, help identify substances regardless of their quantity.

Examples of Chemical Properties

Reactivity of iron with oxygen results in rust formation.
Flammability of firewood, which can ignite and produce ash and heat, is another chemical property.

Real-World Example: The Statue of Liberty

The change in color from copper to green signifies a chemical change due to the formation of new copper compounds.

Observing Properties

Physical properties, like shape and temperature, can be measured without altering the substance.
Chemical properties can only be assessed during a chemical change.

Comparison of Changes

Physical changes alter a substance's form but not its identity.
Chemical changes transform the substance's identity and features.

Application to Microwave Popcorn

Before popping, physical properties include a flat, cool bag, while its flammable nature serves as a chemical property.
After popping, the bag is hot and expanded physically, while chemically it shows the transformation of kernels into fluffy popcorn.

Description

Test your knowledge with these flashcards on chemical properties and changes. This quiz covers key terms like reactivity and chemical change, providing definitions and examples. Enhance your understanding of the basic concepts of matter and its interactions.