Glass

Tempered glass is used in

• test tubes

• car windows

• drinking glasses

• baking dishes

What is a common use for soda lime glass?

• Science equipment

• Car windshields

• Electric light bulbs

• Fine crystal

Conventional glasses are nearly all based on one of the most versatile chemical families, the silicates, which are materials based on SiO2— silicon and oxygen.

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The ultimate theoretical strength of glass is 10 Gigapascals (GPa), equivalent to the pressure created by a stack of 100,000 elephants!

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Glass used in optical fiber can carry 10 trillion bits of information a distance of one kilometer in just one second.

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Answer explanation

That’s enough information to fill 25,000 DVDs every second.

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As glass is heated, it becomes gradually easier to mold and manipulate, making it ideal for shaping into artistic and practical forms.

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What are the physical properties of glass?

• Transparency, flexibility, low melting point

• Transparency, softness, low melting point

• Transparency, hardness, brittleness, high melting point

• Transparency, flexibility, high melting point

How is glass evidence used in forensic investigations?

• Glass evidence is used to determine the type, source, and role of glass in a crime.

• Glass evidence is used to determine the temperature at which the crime was committed.

• Glass evidence is used to identify the fingerprints of the suspect.

• Glass evidence is used to analyze the DNA of the victim.

Which physical property of glass is used to determine its refractive index?

• hardness

• speed of light

• color

• density

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How can glass evidence help in determining the point of impact in a crime scene?

• By analyzing the direction and pattern of shattered glass fragments.

• By analyzing the chemical composition of the glass fragments.

• By measuring the thickness of the glass fragments.

• By examining the color of the glass fragments.