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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| Study of the composition and structure of materials and the changes that materials undergo best describes the science of? | chemistry
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| The branch of chemistry that in cludes the study of materials and process that occur in living things is.. | biochemistry
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| The branch of chemistry that is concerned with identification and composition of materials is.. | analytical chemistry
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| The study of substances containing carbon is | organic chemistry
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| The branch of chemistry concerned with the properties, changes, and relationships between energy and matter is.. | physical chemistry
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| Basic research is.. | carried out for the sake of increasing knowledge
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| a physical property my be investigated by... | melting ice
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| two features that destinguish matter are.. | mass and volume
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| An example of an extensive physical property is.. | mass
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| What is an example of an intesive physical property? | color
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| Quantitative observations are recorded using | numerical info
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| Qualitative obsevation are recorded using | non-numerical info
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| a testable statement used for making predictions and carrying out futher experiments is a | hypothesis
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| The Si units for length and mass are | meter and kilometer
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| the metric unit for length that is closest to the thickness of a dime is the | millimeter
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| the symbol for the metric unit used to measure mass is | g
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| the unit m^3 measures | volume
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| The SI base unit for time is the | second
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| A change in the force of Earths gravity on an object will affect it's | weight
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| To determine density, the quatities that must be measured are | volume and mass
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| Mendeleev noticed that properties of elements usually repeated at regular intervals when the elements were arranged in | atomic mass
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| what are the radioactive elements w/ atomic number from 90 to 103 in the periodic table called? | the actinides
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| The descovery of the noble gases changed mendeleeves periodic table by adding a new | group
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| what are the elements with atomic numbers from 58 to 71 in the periodic table called? | the lathanide elements
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| Elements in a group or column in the periodic table can be expected to have similar | properties
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| Mendeleev predicted that the spaces in his periodic table represented | undiscovered elements
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| Mendeleev attempted to organize the chemical elements based on thier | properties
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| in the modern periodic table, elements are ordered according to | increasing atomic number
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| The most useful soarce of general info about the elements for anyone associated with chemistry is a | periodic
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| 1/2 the distance btw the nuclei of identical atoms that are bonded 2gether is called the | atomic radius
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| Who was the school master who studied chem and proposed an atomic theory | John Dalton
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| A nuclear particle that has about the same mass as a proton, but with no electrical charge is called a | neutron
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| Rutherford fired positively charged particles at a metal foil and concluded that that most of the mass of an atom was | in the electrons
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| Who discovered the nucleus by bombarding gold foil with posetively charged particles? | Rutherford
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| Rutherford's experiments led to the discovery of the | nucleus
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| Experiments with discovery of the cathode rays led to the discovery of the | electron
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| The smallest unit of an element that can exist alone or in a combination with other such particles is an | atom
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| a positively charged particle is a | proton
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| The atomic number of oxygen,8, indicates that there are 8 | protons in the nucleus of an oxygen atom
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| All atoms of the same element have the same | atomic number
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| For electromagnetic radiation, c (speed of light) = | frequency times wavelength
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| In SI, the frequency of electromagnetic radiation is measured in | hertz
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| On eof the wave properties of electromagnetic radiation, such as light, is | frequency
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| As it travewls through space, electromagnetic radiation | exhibits wavelike behavior
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| The distance between two succesive peaks on a wave is its | wavelength
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| a quantum of electromagnetic energy is called a | photon
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| The wave model of light did not explain | the photoelectric effect
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| Mac PLank proposed that a hot object radiated energy in small, specific amounts called | quanta
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| the emission from electrons from metals that have absorbed photons is called the | photoelectric effect
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| For an electron in an atom to change from the ground state to an excited state | energy must be absorbed
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| Atoms are ___ when they are combined | more stable
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| When atoms share electrons, the electrical attraction of an atom for the electrons is called the atom's | electronegativity
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| If the atoms that share electrons have an unequal attraction for the electrons, the bond is called | polar
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| A covalent bond results when ___ are shared | electrons
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| A mutual electrical attraction between the nuclei and valence electrons of different atoms that binds the atoms together is called a | chemical bond
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| If two covalently bonded atoms are identical, the bond is | nonpolar covalent
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| the electrons in volved in the formation of a chemical bond are called | valence electrons
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| Most chemical bonds are | partly ionic and partly covalent
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| A chemical bond formed when two atoms share electrons is called a | covalent bond
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| An otet is = to | 8
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