# Shared Flashcard Set

## Details

Midterm review
Gottlib
17
Science
01/21/2013

Term
 The "fog" generated by dry ice (solid CO2) is an example of...
Definition
 sublimation
Term
 The general group of elements that divide metals and nonmetals are...
Definition
 metalloids
Term
 A measurement is said to have good precision if...
Definition
 if it agrees closely with other similar measurements
Term
 From smallest to largest name the metric prefixes you need to know... ______ is to the negative ninth power______ is to the negative sixth power______ is to the negative third power______ is to the negative second power______ is to the negative first power______ is to the zero power______ is to the first power______ is to the second power______ is to the third power______ is to the sixth power______ is to the ninth power
Definition
 nano,micro,milli,centi,deci,none/meter,deca,hecto,kilo,mega,giga
Term
 Name the number of significant figures in the following numbers:1) 2500 cm2) 0.003053) 40.319
Definition
 2,3,5
Term
 Name how you find Density, Mass, and Volume:D= blahM= blahhhV= blah blah
Definition
 D= M/VM= D x VV= M/D
Term
 How do determine percent error?Use these values to help explain your answer:Accepted value = 2.54The result = 2.46
Definition
 To determine percent error, you...1. Subtract the accepted value from the result (2.46-2.54)2. Then, divide that number by the accepted value (-.08/2.54)3. Multiply that by 100 (-.03149 x 100 = -3.149)
Term
 Out of the following options, determine which one is a heterogeneous mixture:1. Salt 2. Nitrogen3. Iron Ore4. Muddy Water
Definition
 Muddy water
Term
 Out of the following options, determine which one is a homogeneous mixture:1. Oil and vinegar salad dressing2. Air3. Oxygen gas4. Salt and Pepper
Definition
 Air
Term
 The whole number that is closest to the atomic mass of an atom is the:
Definition
 mass number
Term
 The atomic weight of oxygen is... (pay attention to the UNIT)
Definition
 16 amu
Term
 An isotope of potassium contains 4 protons, 5 neutrons, and 4 protons. What is it's atomic number?
Definition
 4
Term
 The mass of one mole of atoms of an elements is it's....
Definition
 molar mass
Term
 Determine which one of the following compounds is molecular (numbers represent subscripts):1)NaCl2)HNO33)N2H44)Fe2O3
Definition
 N2H4
Term
 In which of the following types of chemical reactions does a precipitate form? 1) Single Replacement2) Double Replacement3) Combustion4) Synthesis
Definition
 Double Replacement
Term
 Because the reaction Fe + CuSO4 --> FeSO4 + cu occurs, you know that...
Definition
 Fe is higher on the activity series than Cu is
Term
 Name all of the diatomic elements: (Think of devices to remember them, there are two:)
Definition
 (large numbers represent the subscripts)H2,O2,N2,Cl2,Br2,I2,Fe,
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