WHY ARE YOU SO DENSE?
Unit used to express the pressure of a gas.
What is pascals?
The atomic number of an element that has six protons and eight neutrons.
What is 6? The element is Carbon-14.
Atoms of different isotopes of the same element differ in their total number of this.
What is neutrons?
Type of bonding when valence electrons are transferred from the valence shell of one atom to the valence shell of another another.
What is ionic bonding?
Electronegativity increases as you move in this direction on the periodic table.
What is across the periodic table?
The formula for calculating density.
What is Density= mass/ volume ?
This quantity represents the number of protons in an atom.
What is the atomic number?
An atom that has 13 protons and 15 neutrons is an isotope of this element.
What is aluminum?
The name for the following: Van Der Waals interactions, Dipole-Dipole, and Hydrogen bonding.
What are intermolecular forces?
Elements found in group 18.
What are the noble gases?
Although arsenic is toxic, it is needed by the human body in very small amounts. The body of a healthy human adult contains approximately 5 milligrams of arsenic.
This is the mass of arsenic found in the body of a healthy human adult in grams.
What is 5 X 10^-3 g?
The nuclear charge of an iron atom.
What is +26?
Determine the number of neutrons in an atom of I-127.
What is 74 neutrons?
This type of bond is found in H2.
What are non polar covalent bonds?
Elements found in groups 1-2 can be classified as this.
At STP this physical property of aluminum always remains the same from sample to sample.
What is DENSITY? IT NEVER CHANGES NO MATTER THE SIZE OF THE SAMPLE.
These two subatomic particles within an atom have approximately the same mass.
What are the neutron and the proton?
This is the complete nuclear decay reaction for I-108 undergoing alpha decay.
What is 108I--> 4He+ 104Sb?
Type of bond formed between Lithium and Bromine.
What is an ionic bond?
Atoms, as you move across a period of the periodic table, decrease in atomic radius and increase in electronegativity because of this.
What is an increased effective nuclear charge?
To determine the density of an irregularly shaped object, a student immersed the object in 21.2 milliliters of H2O in a graduated cylinder, causing the level of the H2O to rise to 27.8 milliliters. The object had a mass of 22.4 grams. This is the density of the object.
What is 3.4 g/mL
In the wave-mechanical model of the atom, an orbital is defined as this.
What is the most probable location of the electron?
Determine the total time required for an 80.0-gram sample of I-131 to decay until only 1.25 grams of the sample remains unchanged.
What is 48.126 days?
The lewis dot structure for N2.
(see picture drawn by Ms. Heidi)
As you move down an individual group on the periodic table, the ionization energy decreases because of this.
What is an increased number of shells?