For review
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Best current explanation to an observation which has been well tested experimentally is called: A. hypothesis B. law C. model D. theory E. accident | D. theory
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| State of matter which has definite shape and definite volume. A. liquid B. solid C. gas | B. solid
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| The charge on an electron is A. positive B. neutral C. negative | C. negative
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| How close a measured value is to the actual value is called A. accuracy B. equality C. precision D. conversion factor E. estimation | A. accuracy
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| Atoms of which the following elements have a nucleus with 24 protons: A. copper B. carbon C. chlorine D. chromium E. cerium | D. chromium
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| Escape of molecules from the surface of a liquid to the vapor state is called: A. evaporation B. boiling C sublimation D. condensation | A. evaporation (sublimation is when a solid goes directly from a solid to a gas without it going through the liquid phase)
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| Anything that has mass and occupies space: A. matter B. compound C. element D. mixture | A. matter
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| Heat is a form of energy, which unit(s) is/are appropriate reporting amount/quantity of heat? A. *C B. K C. calories D. both A & B E. cal/(g*C) | C. calories
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| Numbers obtained from measurements which require estimations are: A. exact numbers B. measured numbers | B. measured numbers
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| The standard metric unit for length measurements is the: A. meter B. liter C. gram | A. meter
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| Type of emission when an unstable nucleus converts a neutron to a proton and emits an electron from the nucleus: A. positron B. beta C. gamma D. alpha | B. beta
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| The length of time for half of a radioactive sample to decay: A. curie B. rem C. radioactivity D. half-life | D. half-life
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| Which of the following types of nuclear radiation travels the greatest distance through air or material? A. Beta B. alpha C. gamma | C. gamma
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| How many significant figures/digits in the measurement 63.40 g? A. two B. three C. four D. zero | C. four
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| Which one of these elements is an alkali metal? A. silicon B. strontium C. sulfur D. sodium E. silver | D. sodium
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| Which one of these elements is a halogen? A. bismuth B. bromine C. beryllium D. boron E. barium | B. bromine
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| Selenium-75 is used in pancreas scans. How many neutrons are in an isotope of selenium-75? A. 61 B. 109 C. 75 D. 34 E. 41 | E. 41 (75 - 34 atomic # = 41 neutrons)
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| Shape, color, state of matter, melting point and density are of a substance? A. chemical properties B. physical changes C. physical properties D. chemical changes | C. physical properties
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| Type of emission when high energy is emitted from the nucleus of a radioactive isotope with no change in mass number or atomic number is called: A. positron B. gamma C. alpha D. beta | B. gamma
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| Elements which are usually shiny solids and are good conductors of heat or electricity are called: A. metals B. metalloids C. nonmetals | A. metals
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| Which one of these elements is a semi-metal/metalloid? A. argon B silver C. americium D. gold E. arsenic | E. arsenic
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| Which one of the following represents the measure of biological effect or biological damage done by different kinds of radiation? A. rad B. rem C. half-life D. activity | B. rem
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| Kinetic energy is: A. energy of motion B. stored energy | A. energy of motion
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| Gold has the density of 19.3g/mL. What is the volume of a pure gold ring having a mass of 12.4g? | D=M/V 12.4/19.3 = 0.642mL
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| The USDA recommends 18 mg daily of iron for females. How many ounces of iron would this be if 1 oz. = 28.3 g? | 18 mg x 1/1000 mg x 18/28.3 = 18/28300 = 0.00064 oz.
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| A doctor requests 325 mg of antibiotic. The supply on hand is 250 mg antibiotic / 5.0 mL of solution. How many mL of medication is required? | 325 mg x 5.0mL/250mg = 1625/250 = 6.5 mL
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| Express 2.3 L in deciliters | 2.3L x 10 dL/1L = 23 dL
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| Ne | Neon
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| Ga | Gallium
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| Sn | Tin
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| Xe | Xenon
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| Ni | Nickel
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| Hg | Mercury
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| He | Helium
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| Li | Lithium
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| Rn | Radon
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| O | Oxygen
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| Potassium | K
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| calcium | Ca
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| Krypton | Kr
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| zinc | Zn
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| zirconium | Zr
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| antimony | Sb
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| fluorine | F
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| radium | Ra
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| cobalt | Co
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| tungsten | W
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| platinum | Pt
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| selenium | Se
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| titanium | Ti
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| americium | Am
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| phosphorus | P
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| copper | Cu
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| magnesium | Mg
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| nitrogen | N
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| plutonium | Pu
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| tellurium | Te
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| (Use periodic table) Atomic # for Aluminum | 13
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| (Use periodic table) Atomic # for Tungsten | 74
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| (Use periodic table) Atomic # Chromium | 24
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| Write the isotope # for Manganese-55 | 55/25 Mn
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| How many protons in an atom of molybdenum? | 42
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| How many electrons in an atom of vanadium | 23
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| How many neutrons in an isotope of palladium with a mass number of 109? | 109 - atomic #46 = 63 neutrons
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| What is the mass number for iodine with 70 neutrons? | 70 neutrons + atomic # 53 = mass # of 123
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