1
Q
Three types of Matter
A
- Elements - Substance: Matter whose composition is fixed
- Compounds - Substance: Matter whose composition is fixed
- Mixtures - Not substance : Variable Composition
2
Q
Molecule
A
an independent structure of two or more atoms bound together
3
Q
Compounds
A
consists of two or more different elements that are bonded chemically
4
Q
Elements
A
simplest type of matter with unique physical and chemical properties
5
Q
Characteristics of Compounds
A
- All compounds = the elements are present in fixed parts by mass (fixed mass ratio) because each unit of the compound consists of a fixed number of atoms of each element
- Its properties are different from the properties of its component elements
- can be broken down into simpler substances by chemical changes
6
Q
Characteristics of Elements
A
- cannot be broken down into simpler type of matter
- each element is unique because the properties of its atoms are unique
- several elements occur in molecular form
7
Q
Mixtures
A
consists of two or more substances (elements and/or compounds) that are physically intermingled
8
Q
Characteristics of Mixtures
A
- Components can vary in their parts by mass (NOT FIXED)
- Retains many of the properties of its components ex. Saltwater
- can be separates into their components by physical means
Chem 131
flashcards
Decks in class (20)
# Cards
-
Chapter 1.1 Some Fundamental Definitions11
-
Chapter 1.2 The Scientific Approach: Developing a Model8
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Chapter 1.3 Chemical Problem Solving3
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Chapter 1.4 Measurement in Scientific Study42
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Chapter 1.5 Uncertainty in Measurement, Significant Figures14
-
Chapter 2.1 Elements, Compounds, and Mixtures: an Atomic Overview8
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Chapter 2.2: The Observations that led to an atomic view of matter8
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Chapter 2.3 Dalton's Atomic Theory4
-
Chapter 2.4 The Observations that Led to the Nuclear Atom Model9
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Chapter 2.5 The Atomic Theory Today14
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Chapter 2.6 Elements: A first look at the Periodic Table14
-
Chapter 2.7 Compounding: Introduction to bonding26
-
Chapter 2.8 Formulas, Names, and Masses of Compounds51
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Chapter 2.9 Classification of Mixtures12
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Chapter 2.8 Common Polyatomic Ions50
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Chapter 3.1 The Mole23
-
Chapter 3.2 Determining the Formula of An Unknown Compound14
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3.3 Writing and Balancing Chemical Equations8
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3.4 Calculating Quantites of Reactant and Product9
-
Chapter 3.5 Fundamentals of Solution Stoichiometry5
