# Intro to Physics: Ch. 8.1 – Properties of Solids Before reading

```Intro to Physics: Ch. 8.1 – Properties of Solids
Before reading: Examine the statements below and indicate whether you agree or disagree with each one.
Statement
Agree Disagree
1.) Characteristics that you can see through direct observation are optical properties.
2.) Properties that can only be observed when one substance changes into a different
substance are called chemical properties.
𝑚
3.) Density is the ratio of mass to volume (𝐷 = 𝑣 ).
4.) If atoms or molecules are arranged in an orderly, repeating pattern, the solid is
specialized.
5.) If atoms or molecules are arranged in a random way, the solid is randomized.
6.) Sectional pressure is the ratio of the force acting through a material divided by the
cross-section area through which the force is carried.
7.) Tensile strength is a measure of how much stress in pulling (tension) a material can
withstand before breaking.
8.) Elasticity describes a solid’s ability to be stretched &amp; then return to its original
size.
9.) Breakability is the tendency of a solid to crack or break when forces are applied.
10.) As temperature increases, most objects expand &amp; if temperature decreases, most
objects contract.
After reading: Reexamine your responses to the statements. Rewrite each statement below, correcting
those that are incorrect. Write the page number where the correct information can be found in the text.
Corrected Statement
. Page #
1.)
p.
2.)
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3.)
p.
4.)
p.
5.)
p.
6.)
p.
7.)
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8.)
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9.)
p.
10.)
p.
Vocabulary:
physical properties:
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chemical properties:
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density:
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crystalline:
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amorphous:
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stress:
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tensile strength:
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elasticity:
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brittleness:
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thermal expansion:
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Give 3 examples of physical properties: (p.192)
1.
2.
3.
Give 1 example of chemical properties: (p.192)
1.
Refer to Figure 8.3 (p.193) for the following questions about density:
Name 2 materials with greater density than water:
1.
2.
Name 2 materials with lower density than water:
1.
2.
Name 2 examples of a crystalline solid: (p.195)
1.
2.
Name 2 examples of an amorphous solid: (p.195)
1.
2.
The strength of an object depends on which 2 things? (p.196)
1.
2.
Refer to Figure 8.11 (p.197) for the following questions about tensile strength:
Which materials have the highest and lowest tensile strengths of those listed in the table?
Highest tensile strength:
Lowest tensile strength:
Give an example of an elastic material: (p.198)
Give an example of an inelastic material: (p.198)
Give an example of a brittle material: (p.198)
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