Physical and Chemical Changes
Flashcard
•
Science
•
6th - 8th Grade
•
Hard
Barbara White
FREE Resource
Student preview
18 questions
Show all answers
1.
FLASHCARD QUESTION
Front
Physical Change Noun
[fiz-i-kuhl cheynj]
Back
Physical Change
A change that alters the form or appearance of a substance but does not change its chemical composition.
Example: Adding or removing energy causes water to change state between solid (ice), liquid, and gas (vapor), but the H2O molecules themselves remain unchanged.
2.
FLASHCARD QUESTION
Front
Chemical Change Noun
[kem-i-kuhl cheynj]
Back
Chemical Change
A transformation that results in the creation of new substances with different properties, also known as a chemical reaction.
Example: Reactant molecules (methane and oxygen) break their bonds and their atoms rearrange to form new product molecules (carbon dioxide and water).
3.
FLASHCARD QUESTION
Front
Physical Property Noun
[fiz-i-kuhl prop-er-tee]
Back
Physical Property
A property that can be observed and measured without changing the chemical composition or identity of the substance.
Example: This image shows that physical properties, such as color, size, volume, and density, are characteristics of a substance that can be observed or measured.
4.
FLASHCARD QUESTION
Front
Chemical Property Noun
[kem-i-kuhl prop-er-tee]
Back
Chemical Property
A characteristic that describes how a substance reacts with other substances or behaves under certain chemical conditions.
Example: The image shows iron's chemical property of reactivity. When acid is added, a chemical change occurs, creating gas bubbles as a new substance.
5.
FLASHCARD QUESTION
Front
Intensive Property Noun
[in-ten-siv prop-er-tee]
Back
Intensive Property
A physical property that does not depend on the amount of matter present in a sample.
Example: This image shows that no matter the amount of sulfur (large crystals vs. small powder), intensive properties like color (yellow) and melting point (115.2°C) stay the same.
6.
FLASHCARD QUESTION
Front
Extensive Property Noun
[ek-sten-siv prop-er-tee]
Back
Extensive Property
A physical property that depends on the amount of matter that a particular sample contains.
Example: This diagram shows that when a container of air is physically divided, its volume is also divided, demonstrating that volume is an extensive property because it depends on the amount of substance.
7.
FLASHCARD QUESTION
Front
Malleability Noun
[mal-ee-uh-bil-i-tee]
Back
Malleability
A physical property of a material that allows it to be hammered or pressed into different shapes without breaking.
Example: This image shows that malleability is a physical property where a metal, like gold, can be hammered into a thin sheet without breaking.
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