Measurements, Atoms, Bonding, and Naming – Flashcards

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What are three things that all measurements have?
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Magnitude, Uncertainty, Units
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Math is based on...
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Numbers
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Exact numbers in measurements are obtained by:
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Counting, Definition
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What does "SI" stand for?
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Le Sesteme Internationl d'Unites
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What is the base unit based on?
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The number 10
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Name three units.
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Any of the following : meter, gram, liter, second, kelvin, mole, Celsius, mole.
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What is the "SI" system?
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The international system of units that the world uses to share information.
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What are dervied units ?
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Units built from base SI units
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Name the seven prefixes.
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Kilo, hecto, deka, base, deci, centi, milli
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What is the FLM?
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A quantity described by a number and a unit
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What is quantitive data?
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The amount of something
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What is qualitative data?
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Descriptive data that explains how something is
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When converting a unit to a greater unit, which way does the decimal point move?
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Ex: deci --> Kilo ; to the left.
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Convert 56mm to cm.
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5.6cm
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Which measurement has the greatest quantity ? a)o.o49L b)49mL c)49000mL d)all are equal
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D
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Isotopes are atoms of the same element that have different : a)principal chemical properies b)masses c)# of protons d)# of electons
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B
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Chlorine has atomic number 17 and mass number 35. It has : a)17P, 17E, 18N b)35P, 35E, 17N c)18P, 18E, 17N
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A
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Carbon 14 (atomic number 6) has a) 6 neutrons, b)8 neutrons, c)10 neutrons, d)14 neutrons
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B
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What is the region outside the nucleus where an electron can be found ?
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electron cloud
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All atoms of the same element have the same : a)atomic mass b)number of neutrons c)mass number d)atomic number
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D
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How many orbitals are in the f sublevel ? a)5 b)7 c)9 d)18
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B
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Rutherford concluded that a)atoms are mostly empty space b)atoms contain no charged particles c)electrons formed the nucleus d)atoms were indivisible.
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A
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What is the mass number?
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The number of protons minus the number of neutrons
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What are the three parts of an atom?
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Neutrons, electrons and protons.
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What is the charge of an electron?
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negative
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What is radioactivity?
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Breakdown of elements
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What is half-life ?
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Time it takes for 1/2 of an element to decompose
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Write the electron configuration for silver
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1s^2 2s^2 2p^6 3s^2 or [Kr]5s^2 4d^9
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What is an atom ?
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The smallest part of something
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What is the nucleus made of?
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Protons and Neutrons.
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Multiple covalent bonds may occur in atoms that contain carbon, nitrogen or... a)chlorine b)hydrogen c)oxygen d) helium
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C
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To draw a Lewis Structure, one must know the...
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Number of valence electrons
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In a covalent bond, _____ are shared.
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Electrons
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If two covalently bonded atoms are identical, the bond is: a) nonpolar covalent b)polar covalent
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A
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The electron configuration of nitrogen is 1s2 2s2 2p3. How many more electrons does nitrogen need to satisfy the octet rule?
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5
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Atoms are ____ when they are combined.
a)more stable b)less stable
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A
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What element has the highest electronegativity?
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Fluoride
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Where can you find the number of valence electrons on a periodic table? a)period b)group c)family
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B
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How many bonds can nitrogen form?
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5
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How many bonds can carbon form
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4
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How many bonds can sulfur form?
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6
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How many bonds can hydrogen form?
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1
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How many valence electrons are in alkaline-earth metals ?
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2
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Bonds that are more than 50% ionic are considered a)polar covalent b)nonpolar covalent c)ionic
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C
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In drawing a Lewis structure, each nonmetal atom except hydrogen should be surrounded by
a)2 electrons b)8 electrons c)4 electrons
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B
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How many elements do Ternary Ionic Compounds contain?
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At least three elements
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When are Roman numerals used?
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When transitional metals are involved
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Whare are three exceptions for using Roman Numerals?
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Ag (silver), Zn (zinc) , Al (auminum)
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How do you know when a formula is an acid?
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Hydrogen is the first element listed
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When naming elements, when do you use prefixes?
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In covalent (nonmetal+nonmetal) bonds
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What is the prefix for 7 ?
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hepta
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What does (ag) stand for?
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aqueous
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Which contains oxygen?
a)hydrochloric acid b)carbonic acid
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B
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Is K2O ionic or covalent?
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Ionic
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Name SF4
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Sulfur Tetrafluoride
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What is the formula for ammonium carbonate?
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NH4CO3
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Name the Ionic compound CO3N2
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nitrogen carbonate
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What is the formula for nitric acid?
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HNO3
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Name K2S
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potassium sulfide
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What is Fe+2 + CO3-2 ?
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FeCO3
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