Chemistry Exam
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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| the branch of chemistry that includes the study of materials and processes that occur in living thigs | biochemistry
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| applied research is | carried out for the sake of gaining knowledge
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| a physical property may be investigated by | melting ice
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| 2 features that distinguish matter is | mass and volume
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| an example of extensive physical property is | mass
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| a physical change occurs when | glue gun melts glue
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| Group___ in the periodic table contains only metal | 2
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| physical means can be used to seperate | mixtures
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| the particles in a solid are | tightly packed
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| what is not a property of metals | unreactivity
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| what is an example of observations in quantative | liquid boils at 100 celsius
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| quantative observations are recorded using what | non-numerical information
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| standards are chosen because they | have units that can be converted into other units
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| symbol for metric unit | g
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| m to the third power measures | volume
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| symbol for for volume is | mL
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| SI base unit for time is | seconds
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| a change in the earth's gravity on an object will affect its | weigh
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| what is an example of units | weight
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| how many minutes are in one week | 10080
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| schoolmaster who proposed the atomic theory | John Dalton
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| what is the study of chemicals and how they work | chemistry
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| smallest element that can be alone | atom
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| organic chemistry | study of carbon containing compounds
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| discovery of the electron resulted from experiments using | cathode rays
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| atomic number for aluminum | 13
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| Phosphorus-33 contains | 18 neutrons
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| reactions that affect the nucleous of an atom are called | nuclear reactions
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| who called the atom an atom | Democritus
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| what unit measures radiation | rem
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| for electromagnetic radiation, speed of light equlas | frequency times wavelength
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| SI unit of measure for electromagnetic radiation | hertz
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| wave property of electro. radiation | frequency
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| part of the atom where the electrons cant be found | nucleus
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| number of orbitals for sublevel d | 5
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| number of orbitals for sublevel f | 7
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| how many orbitals can exist in the second main energy level | 4
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| what group is the noble gases | 18
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| how many groups are in the periodic table | 18
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| how many periods are on the periodic table | 7
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| what group does lithium and potassium belong to | alkali metals
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| Mendeleev predicted that the spaces in his periodic table represented | undiscoverd elements
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| Mendeleev attempted to organize the chemical elements based on their | properties
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| modern periodic tables are based on | increasing atomic number
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| Argon,Krypton, and xeneon are | noble gases
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| fluorine and chlorine belong to | halogens
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| horizontal rows on the periodic table | periods
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| number of valence electrons for group 17 | 7
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| how many protons des Antimony have | 51
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| elements in group 1 | alkali metals
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| electrons involved in the formation of a chemical bond | valence electrons
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| Atoms are ___ when they are combined | more stable
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| a covalent bond results when____ are shared | electrons
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| most chemical bonds are | partly ionic and partly covalent
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| a neutral group of atoms held together by a covalent bond is a | molecule
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| an octet is equal to | NO
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| what is not a property of an ionic compound | low boiling point
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| characteristic of metallic bonds | malleable and ductible
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| the elements of the____ group satisfy the octet rule | noble gas
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| how many double bonds are in the Lewis structure for Hydrogen Fuoride | one
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