Question

chapter 2 properties of matter
section 2.1 classifying matter (pages 38-44)
this section explains how materials are classified as pure substances or mixtures. it discusses types of pure substances and mixtures.
reading strategy (page 38)
summarizing as you read, complete the classification of matter in the diagram below. for more information on this reading strategy, see the reading and study skills in the skills and reference handbook at the end of your textbook.
pure substances (page 39)

1. is the following sentence true or false? every sample of a pure substance has exactly the same composition and the same properties.
2. the two categories of pure substances are elements and compounds.

elements (page 39)

1. what is an element?
2. is the following sentence true or false? the smallest particle of an element is an atom.

match each element to its correct symbol.
element symbol

1. aluminum a. c
2. gold b. al
3. carbon c. au

Explanation:

Complete the classification of matter diagram

The diagram classifies "Matter" into "Substance" (pure substance) and "Mixture".

• Under "Substance", the subcategories are "Element" and "Compound".
• Under "Mixture", the subcategories are "Homogeneous mixture" and "Heterogeneous mixture".

Answer:

Reading Strategy (Diagram)

• Left blank under "Substance": Compound
• Right blank under "Mixture": Homogeneous mixture

Pure Substances

1. true
2. elements and compounds

Elements

1. A substance that cannot be broken down into simpler substances.
2. true

Matching

1. b (aluminum - Al)
2. c (gold - Au)
3. a (carbon - C)