Chapter 1 Introduction: Matter and Measurement

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Chapter 1Introduction Matter and Measurement

• Chemistry The Central Science, 10th edition
• Theodore L. Brown, H. Eugene LeMay, Jr., and
  Bruce E. Bursten

Todd Austell, The University of North Carolina ?
2006, Pearson Prentice Hall
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• a.
• about 1000 elements
• about 100 elements
• about 50 elements
• about 200 elements

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• a.
• about 1000 elements
• about 100 elements
• about 50 elements
• about 200 elements

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• b.
• atoms and molecules
• cells
• microcrystals
• metals and nonmetals

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• b.
• atoms and molecules
• cells
• microcrystals
• metals and nonmetals

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1. H
2. Fe
3. O
4. Ca

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1. H
2. Fe
3. O
4. Ca

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1. There are three atoms making up water.
2. The water molecule contains atoms of two
   different elements.
3. Water has more than one bond.
4. Water has a higher mass than hydrogen and oxygen.

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1. There are three atoms making up water.
2. The water molecule contains atoms of two
   different elements.
3. Water has more than one bond.
4. Water has a higher mass than hydrogen and oxygen.

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• a.
• a chemical change
• cannot determine without additional information
• neither a physical nor a chemical change
• a physical change

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• a.
• a chemical change
• cannot determine without additional information
• neither a physical nor a chemical change
• a physical change

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• b.
• a chemical change
• cannot determine without additional information
• neither a physical nor a chemical change
• a physical change

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• b.
• a chemical change
• cannot determine without additional information
• neither a physical nor a chemical change
• a physical change

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• 1. 1 mg
• 2. 1 µg
• 3. 1 pg

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1. 1 mg
2. 1 µg
3. 1 pg

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1. the number of people in your chemistry class
2. the mass of a penny
3. the number of grams in a kilogram

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1. the number of people in your chemistry class
2. the mass of a penny
3. the number of grams in a kilogram

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1. Conversion factors must have at least half as
   many significant figures as the data.
2. The number of significant figures in conversion
   factors does not matter.
3. Conversion factors must always have at least the
   number of significant figures as the data being
   converted.
4. Conversion factors must have at least two more
   significant figures than the data being
   converted.

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1. Conversion factors must have at least half as
   many significant figures as the data.
2. The number of significant figures in conversion
   factors does not matter.
3. Conversion factors must always have at least the
   number of significant figures as the data being
   converted.
4. Conversion factors must have at least two more
   significant figures than the data being
   converted.