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Questions and Answers
_______________ is the study of matter.
_______________ is the study of matter.
Chemistry
An ___________ is the smallest unit of an element with properties of that element.
An ___________ is the smallest unit of an element with properties of that element.
Atom
A ________________ is made of two or more atoms connected or bonded together.
A ________________ is made of two or more atoms connected or bonded together.
Molecule
A ________________________ is one or more different atoms bonded together.
A ________________________ is one or more different atoms bonded together.
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______________, ________________, and _________________ are the 3 states of matter.
______________, ________________, and _________________ are the 3 states of matter.
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Atoms or molecules are attracted to one another and have a definite volume, but do not have a definite shape. It takes the shape of its container. This describes a ____________.
Atoms or molecules are attracted to one another and have a definite volume, but do not have a definite shape. It takes the shape of its container. This describes a ____________.
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Atoms or molecules are barely attracted to one another and have NO definite volume and NO definite shape. This describes a ____________.
Atoms or molecules are barely attracted to one another and have NO definite volume and NO definite shape. This describes a ____________.
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Atoms or molecules are VERY attracted to one another and have a definite shape and a definite volume. This describes a ____________.
Atoms or molecules are VERY attracted to one another and have a definite shape and a definite volume. This describes a ____________.
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In molecular motion of a ____________, the atoms vibrate but do not move past one another.
In molecular motion of a ____________, the atoms vibrate but do not move past one another.
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In molecular motion of a ______________, the atoms vibrate and will move freely past each other.
In molecular motion of a ______________, the atoms vibrate and will move freely past each other.
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Molecules speed up & get farther apart when they are ____________.
Molecules speed up & get farther apart when they are ____________.
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_______________ is anything that has mass and takes up space.
_______________ is anything that has mass and takes up space.
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_____________ is a measure of the amount/quantity of a substance.
_____________ is a measure of the amount/quantity of a substance.
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____________________ is a measure of the amount of space a substance occupies.
____________________ is a measure of the amount of space a substance occupies.
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A _____________ has a definite shape and volume.
A _____________ has a definite shape and volume.
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A _____________ does not have a definite shape or volume.
A _____________ does not have a definite shape or volume.
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A _____________ takes the shape of the container it is in.
A _____________ takes the shape of the container it is in.
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A ___________ takes up a specific amount of space and has a definite shape.
A ___________ takes up a specific amount of space and has a definite shape.
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Volume is the amount of space that something takes up.
Volume is the amount of space that something takes up.
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A ____________ is a state of matter that has a definite shape and a definite volume. The atoms or molecules are very attracted to one another.
A ____________ is a state of matter that has a definite shape and a definite volume. The atoms or molecules are very attracted to one another.
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Study Notes
Key Concepts in Chemistry
- Chemistry involves the study of matter, which encompasses everything with mass and occupies space.
- Atoms are defined as the smallest units of an element, acting as the foundational building blocks of all matter.
Molecular Structures
- A molecule consists of two or more atoms bonded together, forming the basic structure of compounds.
- A compound refers to molecules made of different types of atoms connected together, illustrating chemical diversity.
States of Matter
- There are three primary states of matter: solid, liquid, and gas, each characterized by unique properties.
Properties of States
- Solid: Atoms or molecules are tightly packed, resulting in a definite shape and volume. They vibrate but do not move past one another.
- Liquid: Atoms or molecules have a moderate attraction; they have a definite volume but take the shape of their container.
- Gas: Atoms or molecules experience minimal attraction, leading to no definite shape or volume, as they expand to fill any container.
Molecular Motion
- In a solid, atoms vibrate in place, maintaining a fixed structure.
- In a liquid, molecules can slide past one another while maintaining a fixed volume.
- In a gas, molecules move freely and rapidly, with significant space between them.
Effects of Temperature
- Heating a solid or liquid causes its molecules to speed up and move further apart, leading to a change in state.
Measurements in Chemistry
- Mass quantifies the amount of a substance present.
- Volume measures the space occupied by a substance, crucial for understanding the physical characteristics of matter.
Important Definitions
- Matter: Anything that has mass and occupies space.
- Mass: A measure of the quantity of a substance.
- Volume: The amount of space a substance occupies.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your understanding of the fundamental concepts in chemistry with these flashcards from Chapter 1 on matter. Each card features key terms such as chemistry, atom, and molecule, providing definitions to enhance your learning experience. Ideal for middle school students looking to reinforce their knowledge.
