Abeka Chemistry Test 3 fully solved exam study guide (100% accurate expert solutions)download to pass

atoms the smallest particles into which an element may be broken down without changing the identity of the element 1 torr 1 millimeter of mercury = Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:00 / 0:15 Full screen atomic number What is the number of protons in an atom? 760 torr What does the standard atmosphere equal? carbon-12 What isotope is the atomic mass unit defined relative to? 10^-6s What is a microsecond? hypothesizing the step of the scientific method that involves thinking about nature to develop an idea about how something works 273.15 K and 760 torr What is standard temperature and pressure? 6.022x10^23 How many atoms are in exactly one mole of atoms? -273.15 C Which of the following temperatures equals 0 K? barometer instrument used to measure atmospheric pressure is the pressure the amount of force exerted upon a surface per unit of area is liquid particles have enough energy to move freely but not enough energy to overcome their attraction for each other in what state of matter? accuracy How closely a measured value matches the actual value is nucleus the dense central portion of an atoms is called the Avogadro's number the link between the microscopic and macroscopic levels of chemistry is CuCl2 formula of Copper(II) chloride 28 g/mol What is the molar mass of diborane (B2H6)? Avogadro's law Which law implies that, at constant temperature and pressure, the molar volume of an ideal gas is constant? 4 How many significant figures does the number 68,080 have? 740. torr 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? Gas molecules are in constant, rapid motion, The kinetic energy of gas molecules is directly related to temperature. Gas molecules are negligible in volume compared to the volume compared to the volume of the gas as a whole What are the assumptions of the kinetic theory of matter? The volume decreases until it becomes zero at 0 K the theoretical behavior of any ideal gas as it is cooled to absolute zero at constant pressure 15 dm What does 1.5 m equal? Browning meat Example of chemical change C5H7 Beta- carotene has the molecular formula C40H56. What is the empirical formula? flammability Which of the following is not a physical property? ? What does 5300 g equal in kg? Balance the equation H2(g)+N2(g)——->NH3(g) diffusion When food coloring dye is dropped into water, the dye spreads throughout the water until they are evenly mixed. Name the molecular process that causes the dye and water to mix. Balance the equation Al(s) + HCl(aq) -> AlCl3(aq) + H2(g) density What quantity is the ratio of mass to volume? lead What element Does the symbol Pb represent? H2 Which of the following gases would you expect to diffuse the fastest? - H2, CH4, or C3H8? Si what is the symbol for Silicon calcium carbonate what is the compound CaCO3 electrons negatively charged subatomic particles in an atom hydrogen fluoride what is the compound HF Combination reaction 2K(s)+I2(g)——>2KI single-displacement reaction 2Al(s)+Fe2O3(s)——>2Fe(l)+Al2O3(s)