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khillchemistryexam

QuestionAnswer
study of the composition and structure of materials undergo best describes the science of chemistry
the branch of chemistry that includes the study of materials and processes that occur in living things is biochemistry
the branch of chemisry that is concerned with the identification and compensation of materials is analytical chemistry
the study of substances containing carbon is organic chemistry
the branch of chemisry that is concerned with the properties, changes, and relationships between energy and matter is physical chemistry
technology is the application of scientific knowledge to solve problems
basic research is carried out for the sake of increasing knowledge
applied resaerch is carried out to solve a problem
a physical property may be investicated by melting ice
chemical properties include changes that alter the identity of a substance
two features that distinguish matter are mass and volume
quantitative observations are recorded using non-numerical information
the symbol for the metric unit to measure mass is called grams
the unit m3 measures volume
the symbol for the metric unit to measure volume is called mL
the SI bases unit for time is the second
how many minutes are in one week? 10,080 min
the # or significant fiqures in the measurement 0.000305 kg is 3
the # or significant fiqures in the measurement0.00320 3
what is the atomic # for aluminum 13
an atom of K has 19 protons and 20 neutrons. what is its mass #? 39
nickel-60 has how many neutrons? 32
PHOSPHORUS-33 CONTAINS HOW MANY NEUTRONS? 18
WHAT DOES THE 218 IN PLOYNOMIUM-218 REPRESENT? MASS #
A NUCLEOTIDE IS IDENTIFYED BY # PROTONS AND NEUTRONS IN ITS NECLEUS
WHAT UNIT MEASURES RADIATION? ROENTGEN
WHAT IS THE ATOMIC # FOR TUNGSTEN? 74
WHO CALLED THE ATOM AN ATOM? DEMOCRITUS
HOW MANY SIGNIFICANT DIGITS IN 0.0050 m? 2
THE DISTANCE BETWEEN TWO SUCCESSIVE PEAKS ON A WAVE IS ITS WAVELENGTH
THE ATOMIC SUBLEVEL WITH THE NEXT HIGHEST ENERGY AFTER 4P IS 5S
THE # OF ORBITAL IN THE D SUBLEVEL IS 5
FOR ELECTROMAGNTIC RADIATION THE SPEED OF LIGHT = FREQUENCY TIMES WAVELENGTH
THE MAIN ENERGY LEVEL THAT CAN ONLY HOLD 2 ELECTRONS IS THE FIRST
THE # OF ORBITAL IN THE F SUBLEVEL IS 7
HOW MANY GROUPS ARE FOUND ON THE PERIOTIC TABLE? 18
WHAT IS THE VALUE FOR THE SPEED OF LIGHT? 3.00 x 10¬8
HOW MANY PERIODS ARE ON THE PERIOTIC TABLE? 7
A SINGLE ORBITAL IN THE 3d LEVEL CAN HOLD HOW MANY ELECTRONS? 2
TO WHICH GROUP TO LITHIUM AND POTASSIUM BELONG? ALKALI METALS
MENDELEEV ATTEMPTED TO ORGANIZE THE CHEMICAL ELEMENTS BASED ON THEIR PROPERTIES
ARGON, KRYPTON, AND XENON ARE NOBLE GASES
TO WHICH GROUP DO FLOURINE AND CLORINE BELONG? HALOGENS
A HORIZONTAL RO OF BLOCKS IN THE PERIOTIC TABLE IS CALLED A PERIOD
VALENCE ELECTRONS ARE THOSE IN THE HIGHEST ENERGY LEVEL
WHAT SUBLEVEL IS BEING FILLED IN PERIOD 3? S AND P
A POSITIVE ION IS KNOWN AS CATION
A NEGATIVE ION IS KNOWN AS ANION
THE # OF VALENCE ELECTRONS IN GROUP 17 IS 7
A COVELENT BOND RESULTS WHEN __________ ARE SHARED. ELECTRONS
AN OCTET IS EQUAL TO 8
A CHEMICAL BOD FORMED WHEN 2 ATOMS SHARE ELECTRONS IS CALLED COVELENT BOND
WHAT IS AN EXAMPLE OF A FORMULA UNIT NaCl
MALLEABILITY AND DUCTILITY ARE CHARACTERISTICS OF SUBSTANCES WITH METALLIC BONDS
THE ELEMENTS OF THE ________ GROUP SATISFY THE OCTET RULE WITHOUT BONDING NOBLE GASES
ATOMS ARE _________ WHEN THEY ARE COMBINED. MORE STABLE
WHEN DRAWING A LEWIS STRUCTURE, EACH ATOM, EXCEPT HYDROGEN, SHOULD BE SURROUNDED BY HOW MANY ELECTRONS? 8
MOST CHEMICAL BONDS ARE COVELENT
IS B AN EXAMPLE OF A MOLECULAR FOPRMULA? NO
Created by: hill9