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Chapter 9 Quiz

8th : chp. 9 quiz review

QuestionAnswer
Why do we use the SI system in science? 1.only use one major unit 2. uses only prefixes based on powers of 10 (no negative values)
What are physical properties? non-chemical characteristic of a substance (shape, color, density, luster/shininess, hardness, brittleness, malleability, ductility, tensile/compressive/sheer strength, elasticity, electrical & thermal conductivity, MP, BP)
What is the relationship between volume and pressure of a gas? inverse proportion (as pressure increases, volume decreases)
What is the relationship between volume and temperature of a gas? directly proportional (as temp increases, volume increases)
What is the density equation and how to use it D=m/V ***know how to use, look back on examples***
What is evaporation? phase transition that occurs between the liquid phase and the gas phase, while the temperature of the liquid is below the boiling point.
What is sublimation? phase transition in which a substance transitions from a solid to a gas without going through the liquid phase
What are chemical properties? properties that describes the chemical reactions a substance will or will not engage in (ability to combust, the ability to explode, the ability to oxidize, chemical stability, and toxicity
What are the freezing and boiling points for water in degrees Fahrenheit & Celsius. freezes at 32°F or 0°C. boils at 212°F or 100°C.
What is plasma? ionized gas. Since plasmas are made of ions, they conduct electricity
Pressure is caused by..... molecular collisions
How does fluid flow? What will it flow towards? a difference in pressure must be present. will flow toward lower pressure
Created by: LCA678
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