Questions and Answers
What are the states of matter that can be observed for a particular substance?
What does mass refer to?
The amount of matter present in a sample
Which of the following can be considered matter?
Observing a physical property alters the chemical makeup of a substance.
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What are two types of properties that substances can have?
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Density, color, and _____ are examples of physical properties.
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Chemical reactivity changes when physical changes occur.
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Which of the following is a physical change?
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What happens to a substance during a chemical change?
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Study Notes
What is Chemistry?
- Study of characteristics, composition, and transformations of matter.
- Matter is defined as anything that possesses mass and occupies space.
- Encompasses all entities, both living (e.g., plants, bacteria) and nonliving (e.g., soil, air).
Properties of Matter
- Mass: Amount of matter in a sample.
- Physical Properties: Can be observed without changing the substance. Examples include:
- Density
- Color
- Melting point
- Solids, liquids, gases, plasma
- Chemical Properties: Describe composition and reactivity of matter, altering the substance upon observation.
States of Matter
- The state (solid, liquid, gas, plasma) of a particular substance is influenced by:
- Temperature
- Surrounding Pressure
- Strength of forces holding particles together
- Water can exist simultaneously in all three states (solid, liquid, gas).
Transformations of Matter
- Physical Changes: Alter physical properties without changing chemical composition. Examples include:
- Tearing paper
- Ice melting into water
- Water vaporizing into steam
- Chemical Changes: Involve changes in chemical properties, producing new substances during reactions.
Additional Concepts
- Extensive properties: Depend on the amount of matter present (e.g., mass, volume).
- Intensive properties: Do not depend on the amount of matter (e.g., density, color).
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Description
This quiz covers the foundational concepts of the states of matter as discussed in Chemistry Lesson 1. It focuses on how temperature, pressure, and molecular forces influence the physical state of substances. Test your knowledge on these essential chemistry principles!
