The atom
General Science
moles, periodic table
Periodic table
Chemistry Math
100
Electrons that do not belong to any one atom, but move freely about the metal’s network of empty atomic orbitals are called __________ electrons.
delocalized electrons
100
Chemistry is the study of ______
Matter
100
What shape does the s orbital have?
A sphere shape
100
What is the name of group 17?
halogens
100
How many neutrons would be in Carbon-14
8 neutrons
200
What is the name of the electron that is found in the outermost shell of an atom?
Valence electrons
200
Magnesium melts at 650oC. Would this be qualitative or quantitative data?
Quantitative (numbers)
200
What is the name number with the total number of protons and neutrons that make up an isotope?
Mass number
200
How many valence electrons does Aluminum have?
three valence electrons
200
A student calculates the density of iron as 8.90 g/mL by using lab data for mass and volume. A handbook reveals that the value is 7.86 g/mL. What is the percent error?
13.2% error
300
What is a negatively charged ion called?
An anion
300
What is the tool you would use to measure a large quantity of a liquid? 
A beaker
300
Compared with a mole of carbon atom, a mole of an iron atom is (has fewer atoms, has the same number, has more atoms? )
Has the same amount
300
What is the correct name for K2O?
Potassium Oxide
300
The average weight of an NFL quarterback is 225 pounds. What is this weight in kilograms? (1 Kg= 2.20 lbs)
102 Kg
400
What is the name of the model that visually represents the valence electrons of an atom?
A lewis dot structure
400
How many significant figures are in the measurement 0.01060
4 significant figures
400
Elements in group 16 tend to form what charge when making an ion?
-2 charge
400
What is the noble gas notation for Selenium (Se)?
[Ar] 4s23d104p4
400
Determine the mass of a gold ring that has a volume of 3.48 mL. The density of gold is 19.3 g/mL.
67.2 g
500
What is the lowest energy state of an atom called?
The ground state
500
A positive subatomic particle in the atom is called ___.
proton
500
Which block on the periodic table contains groups 3-12?
d block (the transition metals)
500
Who's experiments identified the nucleus of the atom?
Ernest Rutherford
500
Determine the number of nitrogen atoms present in a 4.05 g sample of the element.
1.74 x 1023 atoms of Nitrogen