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Abeka Chemistry Test 3
Nine-weeks exam covering chapters 1-5
Terms in this set (39)
the smallest particles into which an element may be broken down without changing the identity of the element
1 millimeter of mercury =
What is the number of protons in an atom?
What does the standard atmosphere equal?
the atomic mass unit defined is relative to this isotope
the step of the scientific method that involves thinking about nature to develop an idea about how something works
What is a microsecond?
What is standard temperature and pressure?
273.15 K and 760 torr
How many atoms are in exactly one mole of atoms?
Which of the following temperatures equals 0 K?
instrument used to measure atmospheric pressure is the
the amount of force exerted upon a surface per unit of area is
particles have enough energy to move freely but not enough energy to overcome their attraction for each other in what state of matter?
How closely a measured value matches the actual value is
the dense central portion of an atoms is called the
the link between the microscopic and macroscopic levels of chemistry is
formula of Copper(II) chloride
Which law implies that, at constant temperature and pressure, the molar volume of an ideal gas is constant?
Who many significant figures does the number 68,080 have?
A sample of hydrogen gas is prepared by water displacement at a pressure of 760 torr and a temperature of 22C. If the vapor pressure of H2O at that temperature is 20 torr, what is the partial pressure of the hydrogen?
the theoretical behavior of any ideal gas as it is cooled to absolute zero at constant pressure
The volume decreases until it becomes 0K
Assumptions of the kinetic theory
Gas molecules are in constant, rapid motion, moving in straight lines until they collide with each other or with a solid of liquid (such as the container's walls);
Gas molecules undergo elastic collisions (no energy is lost when they collide)
The kinetic energy of gas molecules is directly related to temperature.
Gas molecules are very far apart and are negligible in volume compared to the volume of the gas;
Gas molecules have negligible attraction between them.
What does 1.5 m equal?
Examples of chemical reactions
cooking of meat; burning of gasoline, fermentation of grape juice
What is the empirical formula of beta-carotene (C40H56)?
examples of physical properties
density, molar mass, color
What does 5300 g equal?
Name the molecular process that causes the dye an water to mix.
What quantity is the ratio of mass to volume?
negatively charged subatomic particles in an atom
atoms of the same element that differ in their mass numbers
associated with an object's motion
the link between microscopic and macroscopic levels of chemistry
how closely a measured value matches the actual value
molar volume of a gas at STP conditions
Gay-Lussac's law of combing volumes
constant pressure, constant temperature
reactants completely react
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