Exam Study Guide
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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 concerned with the properties, changes, and realtionships between energy and matter is | Physical Chemistry
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| The study of substances containing carbon is | Organic chemistry
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| An example of extensive physical property is | mass
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| The particles in a solid are | packed closely together
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| The state of matter in which a material has a definite volume but no definite shape is | liquid state
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| The most useful source of chemical information about the elements is a | periodic table
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| The elements that border the zigzag line in the periodic table are | metalloids
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| A vertical column of blocks in the periodic table is called | group
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| Elements in a group in the periodic can be expected to have similar | properties
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| Chemistry is the study of? | elements
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| 2.Gamma rays are | electromagnetic waves
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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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| Who called the "atom" an atom? | Democritus
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| A nuclide is identified by | the number of protons and neutrons in its nucleus
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| what is the atomic number for tungsten | 74
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| In a glass tube, electrical current passes from the negative electrode, called the ________ to the other electrode | Cathode
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| Radioactive tracers are used to | follow the movement of substances in a system
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| What scientist discovered electrons? | J.J Thompson
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| Organic Chemistry is the study of? | carbon containing compounds
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| In SI, the frequency of electromagnetic radiation is measured in | Hertz
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| One of the wave properties of electromagnetic radiation, such as light, is | frequency
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| As it travels through space, electromagnetic radiation | exhibits wavelike behavior
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| A quantum of electromagnetic energy is called a(n) | photon
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| The wave model of light did not explain | the photoelectric effect
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| Max Planck proposed that a hot object radiated energy in small, specific amounts called | quanta
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| How many quantum numbers are needed to describe the energy state of an electron in an atom? | four
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| For the f sublevel, the number of orbitals is | seven
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| the total number of orbitals that can exist at the second main energy level is | four
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| how many groups are found on the periodic table? | 18
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| What are the radioactive elements with atomic numbers 90 to 103 in the periodic table called? | the actinides
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| Which group do lithium and patassium belong? | alkali metals
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| Mendeleev predicted that the spaces in his periodic tabl represented | undiscovered elements
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| Argon, Krypton, and Xenon are | noble gases
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| one-half the distance between the nuclei of identical atoms that are bonded together is called | atomic radius
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| A horizonatal row of blocks in the periodic table is called | period
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| The person whose work led to a periodic table based on increasing atomic number was | Moseley
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| The group of 14 elements in the sixth period that have occupied 4f orbitals is the | lanthanides
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| A positive ion is callled a | cation
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| A negative ion is called a | anion
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| Quantitative observations are recorded using | numerical information
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| A testable statement used for making predictions and carrying out further experiments is a | hypothesis
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| The SI standard units for length and mass are | meter and kilogram
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| the symbol for the metric unit used to measure mass is | g
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| The symbol that represents the measured unit for volume is | mL
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| The SI base unit for time is the | second
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| The most appropriate SI unit for measuring the length of an automobile is the | meter
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| A change in the force of Earth's gravity on an object will affect its | weight
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| the number of significant digits in 0.000305 kg is | 3
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| the number of significant figures in 170.040 is | 6
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| A mutal electrical attraction between the nuclei and valence electrons of different atoms that binds the atoms together is called a(n) | chemical bond
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| Atoms are ________ when they are combined | more stable
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| The chemical bond formed when two atoms share electrons is called a | covalent bond
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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 covalent bonds is a | molecule
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| An octet is equal to | 8
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| The elements of the __________ group satisfy the octet rule wothout forming compunds | noble gases
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| How many double bonds are in the Lewis structure of HF? | 0
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| The electron-sea model of bonding represents | metallic bonding
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