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Questions and Answers
What is the basic unit of matter?
What do we call two or more atoms joined by chemical bonds?
Molecule
A gas is a substance in which the particles are packed together and do not move much.
False
A substance in which particles are close together and in contact but move past each other is called a ___.
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What is kinetic energy?
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What is density?
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A pure substance consists of just one type of particle and is the same throughout.
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Which of the following is a mixture made of substances so evenly mixed that it is difficult to see the individual substances?
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What is the term for a special group of metals that is more difficult and expensive to extract?
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What is luster?
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Ability to be easily hammered and shaped is known as ___.
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Which chart organizes all known elements according to patterns in their properties?
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Study Notes
Basic Units of Matter
- Atom: The basic unit of matter.
- Molecule: Two or more atoms joined by chemical bonds.
States of Matter
- Solid: Particles are packed together and don't move much.
- Liquid: Particles are close together and in contact, but can move past each other.
- Gas: Particles are far apart and don't stay in contact with each other.
Key Properties of Matter
- Kinetic Energy: The energy of motion.
- Density: The amount of mass in a given amount of space, measured in a unit of mass per unit volume.
Classifications of Matter
- Pure Substance: Consists of just one type of particle and is the same throughout.
- Homogeneous Mixture: Substances are evenly mixed so it is difficult or impossible to see the individual substances.
- Heterogeneous Mixture: Mixture made of parts that are easily identified and can be separated.
- Element: A substance that contains only one type of atom and cannot be broken down into a simpler form.
Elements and the Periodic Table
- Periodic Table: A chart that organizes all known elements according to patterns in their properties.
- Metal: An element that is a good conductor of heat and electricity.
- Luster: Shininess.
- Malleability: Ability to be easily hammered and shaped.
- Rare Earth Metal: A special group of metals that is more difficult and expensive to extract.
- Nonmetal: An element that is a poor conductor of heat and electricity.
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Description
Explore the fundamental units and states of matter in this quiz. Learn about atoms, molecules, and the properties that define solids, liquids, and gases. Additionally, classify different types of mixtures and pure substances to enhance your understanding of chemistry.
